var upid;
var username; 
var shortlistedHotels = new Array();
var slLimit = 5;
var searchLimit = 10;
var mapToOldSortFields = new Array("Popular", "HotelName", "Rating", "LowRate");
var lastSearchUrl;
var fxOk = (getInternetExplorerVersion() > 6);
var popularBrandLink = "See more ...";
var popularBrandLimit = 5;
var popularBrandResults = new Array();

if (window.Matrix) {
   window.matrix = new Matrix(0, 'today', 7, 'en', true, 'list', true, 10); 
   window.matrix.enableXDomain('rates.asiawebdirect.com');
}

//Returns the version of Internet Explorer or a -1
//(indicating the use of another browser).
function getInternetExplorerVersion() {
	var rv = 1000; // Return value assumes success.
	if (navigator.appName == 'Microsoft Internet Explorer')	{
		var ua = navigator.userAgent;
		var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
		if (re.exec(ua) != null)  rv = parseFloat( RegExp.$1 );
	}
	return rv;
}


/**
 * Page Parameters Class - Holds info about the current destination page.
 */
function PageParams(destinationId, destinationLevel) {
	this.destinationId = destinationId;
	this.destinationLevel = destinationLevel;
	this.showingPopular = false;
	this.loadingHotels = true;
	this.countryCode = "US";   // default
	
	PageParams.prototype.getPopularHotelsUrl = function() {
		return '/recommend/popular/hotels/json/' + this.countryCode  + '/' + this.destinationLevel  + '/' + this.destinationId  + '/';
	}

	PageParams.prototype.getHotelSearchUrl = function() {
		return '/recommend/search/hotels/json/' + this.destinationLevel  + '/' + this.destinationId  + '/1/5/0/1000/0/0/0/0/0/0/0/';
	}
	
	PageParams.prototype.getPopularDestinationsUrl = function() {
		return '/recommend/popular/destinations/json/' + this.countryCode  + '/' + this.destinationLevel  + '/' + this.destinationId  + '/';
	}

	PageParams.prototype.getPopularDestinationsFragmentUrl = function() {
		return '/recommend/popular/destinations/' + this.countryCode  + '/' + this.destinationLevel  + '/' + this.destinationId  + '/';
	}

	PageParams.prototype.getPopularBrandsUrl = function() {
		return "/recommend/popular/hotelsByGroup/" + this.countryCode + "/" + this.destinationLevel + "/" + this.destinationId + "/0/";
	}
	
}


/* Destination page functions */

function countryHasBeenSet() {
	new Ajax.Request(pageParams.getPopularHotelsUrl(), {
			method:'get', 
			onSuccess: function(transport){processPopularHotels(transport.responseText.evalJSON(true));},
			onFailure: function(transport){loadDestMatrix(false) ; doError(transport.responseText) } });  
	     
    if (pageParams.destinationLevel < 4) { 
        new Ajax.Request(pageParams.getPopularDestinationsUrl(), {
        		method:'get', 
        		onSuccess: function(transport){processGuides(transport.responseText.evalJSON(true));}, 
        		onFailure: function(transport){doError(transport.responseText);} }); 
    }
  
    new Ajax.Request(pageParams.getPopularBrandsUrl(), {
		method:'get', 
		onSuccess: function(transport){processBrands(transport.responseText.evalJSON(true));}, 
		onFailure: function(transport){doError(transport.responseText);} }); 
    
} 


function processGuides(data) { 
	var results = document.getElementById("destGuides"); 
	if (data["destinations"] && data["destinations"].length > 0) { 
		results.innerHTML = tmpl("dest_guides_tmpl", data); processQuickJumps(data); 
	} else if (pageParams.destinationLevel < 4) { 
		new Ajax.Updater({ success:'popularDestinations', failure:'recommendErrors' }, pageParams.getPopularDestinationsFragmentUrl(), { method: 'get', evalScripts: true }); 
	} 
} 


function processBrands(data) { 
	var results = document.getElementById("hotelBrands"); 
	if (data["hotels"] && data["hotels"].length > 0) {
		popularBrandResults = data;
		results.innerHTML = tmpl("hotel_brands_tmpl", data);  
	} 
} 

function togglePopularBrands() {
	if (popularBrandLimit == 5) {
		popularBrandLimit = 10;
		popularBrandLink = "See less ...";
		
	} else {
		popularBrandLimit = 5;
		popularBrandLink = "See more ...";
	}
	var results = document.getElementById("hotelBrands");
	results.innerHTML = tmpl("hotel_brands_tmpl", popularBrandResults);	   
}


function processQuickJumps(data) { 
	var results = document.getElementById("quickJumps");
	if (data["destinations"] && data["destinations"].length > 0) { 
		results.innerHTML = tmpl("quick_jumps_tmpl", data);
		results.style.display = '';
	} 
}


function processHotels(data) {
	if (data["hotels"]) {
		pageParams.loadingHotels = false; 
	    searchResults.setHotels(data["hotels"]) 
	    if (!pageParams.showingPopular) {	    	
	    	displayHotels();
	    	doSortBy(2);
	    	$("sortPanel").style.display="block";
	        $("popularHotels").style.display="block";
	    }
	 }
}

function countryTooLarge() {
  var cId = parseInt(pageDestinationId, 10);
  return cId == 11  || // Thailand
         cId == 251 || // Malaysia
         cId == 521 || // Australia
         cId == 186 || // China
         cId == 359 || // Indonesia
         cId == 577 || // New Zealand
         cId == 380 || // United Kingdom
         cId == 157;   // Vietname
;
}

function isContinent() {
  return pageDestinationLevel == 1;
}

/**
 * Determine the currently selected destination.
 * Even on specific destination pages, the currently selected destination can be a sub-destination.
 */
function getCorrectDestinationId() {
    var destId = $('destinations4').value;
    if (destId == 0) { // 'All' is selected
        destId = $('destinations3').value;
    }
    return destId;
}

function loadCheckInDestMatrix() {
  loadDestMatrix(true);
}


function loadDestMatrix(useDates) {
    if (isContinent()) {
      alert('Please select a country first');
      return;
    }
    if (countryTooLarge()) {
      alert('Please select a region first');
      return;
    }

    waitForCond(function() { return window.bodyLoaded == true;  }, 0.1, function() {
        $('popularHotels').style.display = 'none';
        window.matrix.setRequestedId(getCorrectDestinationId());
        window.matrix.setMatrixType("Destination");
        if (useDates) {
            foobarbaz(); //origLoadCheckInDestMatrix();
        } else {
            window.matrix.loadMatrix();
        }
    });
}

function loadPopularMatrix(ids) {
    waitForCond(function() { return window.bodyLoaded == true; }, 0.1, function() {
        window.matrix.setRequestedId(ids);
        window.matrix.setMatrixType("MultipleHotel");
        window.matrix.loadMatrix();
        if (!isContinent() && !countryTooLarge()) {
            $('popularHotels').innerHTML = '<center><div><label onclick="loadDestMatrix(false);" class="links">Show All Hotels</label></div></center>';
            $('popularHotels').style.display = 'block';
        }
    });
}


document.observe('matrix:loaded', function(e) {
  $('hotelsLoadingContainer').style.display = 'none';
  $('_mtx_container').style.visibility = 'visible';
});

function processPopularHotels(data) {
  if (data && data['hotels'] && data['hotels'].length > 0) {
    var hotels = data['hotels'];
    var ids = "";
    for (var i = 0; i < hotels.length; i++) {
        if (i != 0) ids = ids + ",";
        ids = ids + hotels[i]['HotelId'];
    }
    loadPopularMatrix(ids);
  } else {
    // no popular hotels - load full results
    loadDestMatrix(false);
  }
}


/*
function processPopularHotels(data) {
    var results = document.getElementById("popularHotels"); 
      if (data["hotels"]) {             
          searchResults.setHotels(data["hotels"]) 
          results.innerHTML = tmpl("hotel_search_tmpl", searchResults);
          pageParams.showingPopular = true;
          if (pageParams.destinationLevel > 1)
        	  results.innerHTML = results.innerHTML + '<center><div style="padding:2px;"><label onclick="resetSearch();" class="links">Show All Hotels</label></div></center>';
          $("sortPanel").style.display="block";
          $("popularHotels").style.display="block";
    }
      
    if (pageParams.destinationLevel > 1)  
    	new Ajax.Request(pageParams.getHotelSearchUrl(), {method:'get', onSuccess: function(transport){processHotels(transport.responseText.evalJSON(true));}, onFailure: function(transport){doError(transport.responseText);} });  
}
*/

function nextPage() {
    searchResults.setNextPage(); 
    displayHotels();
    scrollToSearch();  
} 

function prevPage() {
    searchResults.setPrevPage(); 
    displayHotels();
    scrollToSearch();  
} 

function displayHotels() {
    var results = document.getElementById("popularHotels");
    results.innerHTML = tmpl("hotel_search_tmpl", searchResults);
}


/**
 * @param deprecated.
 */
function setupSearchPanel(country, region, area) {
    if ($('searchPanel')) {
        searchPanelLoaded(pageDestinationName); 
        loadDestinations(country, region, area);
    } 

    if ($("sortPanelHeading")) {
	
    	if (pageDestinationLevel < 2) {
	        $("sortPanelHeading").innerHTML = '<span style="padding-top:3px;float:left;"><label id="sortHeading" class="sortHdg" style="font-size:13px;">Popular Hotels in ' + pageDestinationName + '</label></span>';
	    }
	    $("sortPanelHeading").style.display="block";    
    }
    
}

/**
 * New version assumes destination selectes have been populated by generator.
 */
function setupSearchPanelButNotDestinations(country, region, area) {
    //if ($('searchPanel')) {
        searchPanelLoaded(pageDestinationName);
        setSelected($("destinations2"), country);
        setSelected($("destinations3"), region);
        setSelected($("destinations4"), area);
    //} 

    if ($("sortPanelHeading")) {
	
    	if (pageDestinationLevel < 2) {
	        $("sortPanelHeading").innerHTML = '<span style="padding-top:3px;float:left;"><label id="sortHeading" class="sortHdg" style="font-size:13px;">Popular Hotels in ' + pageDestinationName + '</label></span>';
	    }
	    $("sortPanelHeading").style.display="block";    
    }
    
}


/* End destination page functions */

function searchPanelLoaded(destinationName) {
       $('destinations2').disabled = false;
       $('destinations3').disabled = false;
       $('destinations4').disabled = false;

}

function scrollToSearch() {
	window.scroll(0, 697);
}


/*
 * Destination Functions.
 */

function letterClick(letterLbl){
    var countrySel = $('destinations2');
    
    if (countrySel) {
        // First select the last option begining with letter to show more options for the letter.
        for (i = countrySel.options.length - 1; i >= 0; i--) {
        
            if (countrySel.options[i].innerHTML.substring(0,1) == letterLbl.innerHTML) {
                countrySel.selectedIndex = i;
                break;
            }
        
        }
        
        // Then select and unselet the first one.
        for (i = 4; i < countrySel.options.length; i++) {
        
            if (countrySel.options[i].innerHTML.substring(0,1) == letterLbl.innerHTML) {
                countrySel.selectedIndex = i;
                countrySel.options[i].selected = false;
                return;
            }
        
        }
        
    }
    
}

function getFacilitiesForSmartSearch() {
	var facilityStr =   	
	    ($("restaurant").checked ? "Restaurant," : "") +
	    ($("kitchenette").checked ? "Kitchenette," : "") +
	    ($("pool").checked ? "SwimmingPool," : "") +
	    ($("fitnessCentre").checked ? "FitnessCentre," : "") +
	    ($("broadbandInternet").checked ? "Internet," : "");

	return (facilityStr.length > 1)?facilityStr.substring(0, facilityStr.length - 1):""; 
}

function getDestinationIdForSmartSearch() {
	var destinationLevel = currentLevel();

	if ((destinationLevel > 1) && $("destinations" + destinationLevel)) {
    	
        if (destinationLevel == 4) {
        	destinationId = currentDestinationsArray(4);
        	if (destinationId.length > 1) {
        		destinationLevel = 3;
        	}
        }
        
        destinationId = [$("destinations" + destinationLevel).value];
    } else {
    	destinationId = [pageDestinationId];
    }
	
	return destinationId;
}


/* if we have destination selects use them otherwise use the page embedded one */
function currentLevel() {
	
	if ($('destinations2')) { 
		
    	for (i = 4; i > 1; i--) {
            
            if ($('destinations' + i) && $('destinations' + i).value > 0) {
                return i;
            }
            
        }
    	
        return 0;
	} else {
		return pageDestinationLevel;
	}
}

function getMultipleSelected(select) {
    var selectedValues = new Array();                    
	
	for (var i = 0; i < select.options.length; i++) {
	
		if (select.options[i].selected) {
		    selectedValues[selectedValues.length] = select.options[i].value;
		}
	
	}

	return selectedValues;
} 


function currentDestinations(level) {
	return escape(Object.toJSON(getMultipleSelected($('destinations' + level))));
} 

function currentDestinationsArray(level) {
	return getMultipleSelected($('destinations' + level));
} 



function getDestinations(pLevel, destinationPath) {
    id = $('destinations' + pLevel).value;
    
    if (id > 0) {
	    new Ajax.Request('/frontend/destination/children/' + id + '/', 
	        {method:'get', 
	        onSuccess: function(transport){processDestinations(pLevel,transport.responseText.evalJSON(true), destinationPath);}
	    });
	} else {
		processDestinations(pLevel, "", destinationPath);
	}
        
}



/**
 * Populate a destination select and doSearch if no further choices or selectedValues.
 */
function processDestinations(pLevel, data, destinationPath) {
	var destSelect = $('destinations' + (pLevel + 1));
    destSelect.innerHTML = '';
    setDestinations(destSelect, pLevel, data, '');
    
    if (destinationPath) {
    	setSelected(destSelect, destinationPath.getId(pLevel + 1));
    	if (pLevel < 3) getDestinations(pLevel + 1, destinationPath);
    } else if (destSelect.options.length == 1 || pLevel == 3) {    	
    	destSelect.selectedIndex = 0;
    	doSearch();
    	changeImage(pLevel);
    }
    
}

/**
 * Populate a destination select or optGroup.
 */
function setDestinations(parentElement, pLevel, data) {
    var destinations = data['destinations'];
    var numDestinations = destinations ? destinations.length : 0;
    
    if (pLevel == 2) $('destinations4').innerHTML = "";
    if (pLevel > 1 && numDestinations != 1) 
    		addOption(parentElement, 'All', '0');
    
    for (var i = 0; i < numDestinations; i++) {
    	addOption(parentElement, destinations[i]['name'], destinations[i]['id']);
    }
    
}

function getDestinationSearchTypes(destinationLevel, destinationId) {
	
	if ($('dst1')) {
		for (var i = 1; i <= 4  ; i++) {
			$('dst' + i).checked = false;
		}
	
		if ((destinationId == 0  && destinationLevel > 2) || (destinationLevel == 4 && getMultipleSelected($('destinations4')).length > 1)) {
			destinationId = $('destinations' + (destinationLevel -1)).value;
			destinationLevel -= 1;
		}
		
		new Ajax.Request('/recommend/search/types/' + destinationLevel + '/' + destinationId + '/', 
		    {method:'get', 
		    onSuccess: function(transport){processDestinationSearchTypes(transport.responseText.evalJSON(true));}
		});
	}
                
}

/**
 * Adds the search types in data to the search panel.
 */
function processDestinationSearchTypes(data) {

	for (var i = 1; i <= data.length; i++) {
		$('dst' + i + 'Lbl').update(data[i - 1]);
		$('dst' + i).style.visibility = "visible";
	}
	
	for (var i = data.length + 1; i <= 4  ; i++) {
		$('dst' + i).style.visibility = "hidden";
		$('dst' + i + 'Lbl').update('&nbsp;');		
	}
	
		
}


function getCountries(destinationPath) {

	new Ajax.Request('/frontend/destination/countries/', 
	    {method:'get', 
	    onSuccess: function(transport){processCountries(transport.responseText.evalJSON(true), destinationPath);}
	});
                
}


/**
 * Populates the country select. 
 */
function processCountries(data, destinationPath) {
	var select = $('destinations2');
	optgrp = addOptionGroup(select, "Most Popular");  
    addOption(optgrp, 'Thailand', '11');
    addOption(optgrp, 'Malaysia', '251');
    addOption(optgrp, 'Singapore', '1');
    addOption(optgrp, 'Hong Kong', '136');
    
    optgrp = addOptionGroup(select, 'A to Z');
    setDestinations(optgrp, 1, data);
    
    if (destinationPath) {
	    setSelected(select, destinationPath.countryId);
		getDestinations(2, destinationPath);
    }
}


function addOption(parent, name, value) {
    var option = document.createElement('option');
    option.value = value;
    option.innerHTML = name;
    option.className = 'destOption';    
    parent.appendChild(option);
}


function addOptionGroup(parent, name) {
    var optgrp = document.createElement('optgroup');
    optgrp.label = name;
    optgrp.className = 'optGroup';	    
    parent.appendChild(optgrp);
	return optgrp;
}

function setSelected(select, value) {
	for (i = select.options.length - 1; i >= 0; i--) {
        
        if (select.options[i].value == value) {
        	select.selectedIndex = i;
            return;
        }
    
    }
	
}

function loadDestinations(countryId, regionId, areaId) {
	getCountries(new DestinationPath(countryId, regionId, areaId));
}

function getDestinationUrl(destinationLevel) {
	destSelect = $('destinations' + destinationLevel);
	var value = destSelect.options[destSelect.selectedIndex].value;
	var name = destSelect.options[destSelect.selectedIndex].text;
	name = name.replace(/-/g, '_').replace(/ /g, '-').toLowerCase();
        return (destinationLevel > 2) ? getDestinationUrl(destinationLevel - 1) + (((value > 0) && (name!="all"))?"/" + name:""): name;
}

function gotoDestinationPage(destinationLevel) {
	$('destinations2').disabled = true;
	$('destinations3').disabled = true;
	$('destinations4').disabled = true;
	name = getDestinationUrl(destinationLevel);
	window.location = "/" + name + "/";
}

function destinationChange(destinationLevel) {
        /* If on continent/country page or selected destination is outside of the current destination structure then goto the selected destination page */
	if (destinationLevel <= pageDestinationLevel || pageParams.destinationLevel <= 2) {
	    gotoDestinationPage(destinationLevel);
	} else if (destinationLevel == 3) {
            alert('destination level 3');
	/* If its a level 3 change populate the level 4 select. (getDestinations ends up triggering a search) */		
		getDestinationSearchTypes(destinationLevel, $('destinations' + destinationLevel).value);
		getDestinations(destinationLevel);		
	} else  {
	    /* handle level 4 search */
            loadDestMatrix(false);
            changeImage(destinationLevel);
	} 
	
}

function changeImage(destinationLevel) {
	if ($("destinationImage")) {
		destImage = $("destinationImage");
		if (typeof oldImage == "undefined") oldImage = $("destinationImage").src;
		newSrc = "/media/images/destinations/pages/" + $('destinations' + destinationLevel).value + ".jpg";
		imageSwap(destImage, newSrc, oldImage);
	}
	
}

function imageSwap(image, newSrc, oldSrc) {
    var tempImage = new Image();
    tempImage.onload = function(){image.src = tempImage.src}
    tempImage.onerror = function(){image.src = oldSrc}
    tempImage.src = newSrc;            
 }


/**
 * DestinationPath Class
 */
function DestinationPath(countryId, regionId, areaId) {
	this.countryId = countryId;
	this.regionId = regionId;
	this.areaId =areaId;
	
	DestinationPath.prototype.getId = function(level) {
		switch (level) {
			case 2: return this.countryId;
			case 3: return this.regionId;
			case 4: return this.areaId;
			default: return 0;
		}
			
	}
	
}



/*
 * Search Functions.
 */

/**
 * 
 */
function PrevPageUrls() {
	this.pages = new Array();
	this.inPrevMode = false;
	
	
	PrevPageUrls.prototype.addPage = function(url) {
		this.pages.push(url);
	}
	
	PrevPageUrls.prototype.prevPage = function(url) {
		if (!this.inPrevMode) { 
			this.inPrevMode = true;
			this.pages.pop();
		}
		
		return this.pages.pop();
	}
	
}

function doPrevPage() {
	if (prevPageUrls) {
		url = prevPageUrls.prevPage();
	    lastSearchUrl = url;
	    new Ajax.Request(url, {method:'get', onSuccess: function(transport){processSearch(url, transport.responseText);} });

	}
	
}


function doSearch() {
	$('loading').style.visibility = "visible";

	if ((typeof(searchSliders) == 'undefined') || pageParams.loadingHotels) {
		document.observe("searchResults:hotelsLoaded", function() {doSearch()});
	} else {
	    country = countryCode;
	    destinationLevel = currentLevel();
	
	    if ((destinationLevel > 1) && $("destinations" + destinationLevel)) {
	    	destinationId = [$("destinations" + destinationLevel).value];
	        if (destinationLevel == 4) destinationId = currentDestinationsArray(4);
	    } else {
	    	destinationId = [pageDestinationId];
	    }
	
	    if (!destinationId) {destinationId = 0; destinationLevel = 0}
	            
	    var minCategory = $('minCategory').innerHTML;
	    var maxCategory = $('maxCategory').innerHTML;
	    var minRate = $('minRate').innerHTML;
	    var maxRate = $('maxRate').innerHTML;                
	            
	    var r = $("restaurant").checked ? 1 : 0;
	    var k = $("kitchenette").checked ? 1 : 0;
	    var p = $("pool").checked ? 1 : 0;
	    var f = $("fitnessCentre").checked ? 1 : 0;
	    var b = $("broadbandInternet").checked ? 1 : 0;
	    var s = $("satelliteCableTV").checked ? 1 : 0;
	    var dsb = getDestinationSearchBits(destinationLevel);
	    var hsb = getHotelSearchBits();
	    var url = '/recommend/search/hotels/json/' + destinationLevel + '/' + destinationId + '/' + minCategory + '/' + maxCategory + '/' + minRate + '/' + maxRate + '/' + r + '/' + k + '/' + p + '/' + f + '/' + b + '/' + s + '/' + dsb + '/';
	    var searchFilter = new HotelSearchFilter(minCategory, maxCategory, minRate, maxRate, dsb, hsb, destinationId);	    
	    searchResults.filterHotels(searchFilter);
	    var results = document.getElementById("popularHotels");
	    results.innerHTML = tmpl("hotel_search_tmpl", searchResults);
	    checkShowAll(url);
	    $('loading').style.visibility = "hidden";
	    $("sortPanel").style.display="block";
	    $("popularHotels").style.display="block";
	}
}

function getDestinationSearchBits(destinationLevel) {
	bits = 0;
	levelOffset = (4 - destinationLevel) * 4;
	for (i=0;i<4;i++) {
		if ( $("dst" + (i + 1)).checked)  {bits = bits | (1<<(levelOffset + i));}  
	}
	
	return bits;
}

function getHotelSearchBits() {
	bits = 0;
    if ($("restaurant").checked) bits = bits | 1;
    if ($("kitchenette").checked) bits = bits | 2;
    if ($("pool").checked) bits = bits | 4;
    if ($("fitnessCentre").checked) bits = bits | 8;
    if ($("broadbandInternet").checked) bits = bits | 16;
    if ($("satelliteCableTV").checked) bits = bits | 32;
    //alert(bits);
	return bits;
}


function processSearch(searchUrl, data) {
	if (lastSearchUrl == searchUrl) {
		  var results = document.getElementById("popularHotels"); 
    	   if (data["hotels"]) { 
		    	searchResults.setResults(data["hotels"]);
		        results.innerHTML = tmpl("hotel_search_tmpl", searchResults);  
		  }
		checkShowAll(searchUrl);
	}
	$('loading').style.visibility = "hidden";
    $("sortPanel").style.display="block";
    $("popularHotels").style.display="block";
}


/**
 * Called from inline javascript in search results fragment if redirected from popular hotels request.
 */
function processSearchFromRedirect(searchUrl) {
    prevPageUrls = new PrevPageUrls();
    prevPageUrls.addPage(searchUrl);
	lastSearchUrl == searchUrl;
	checkShowAll(searchUrl);
	setSortFields(2);
}



function checkShowAll(url) {
	
	if (url.substring(url.length - 26, url.length) == "/1/5/0/1000/0/0/0/0/0/0/0/") {
		$('showAll').style.visibility = "hidden";
	} else {
		$('showAll').style.visibility = "visible";
	}
	
}

/*function setSortFields(field) {
	$('sortSpan1').style.backgroundColor = '#0075B1';
	$('sortSpan2').style.backgroundColor = '#0075B1';
	$('sortSpan3').style.backgroundColor = '#0075B1';
	$('sort1').style.fontWeight = 'normal';   	
    $('sort2').style.fontWeight = 'normal';
    $('sort3').style.fontWeight = 'normal';
    $('sort1').style.textDecoration = 'underline';
    $('sort2').style.textDecoration = 'underline';
    $('sort3').style.textDecoration = 'underline';
    $('arrow1').style.visibility = 'hidden';   	
    $('arrow2').style.visibility = 'hidden';
    $('arrow3').style.visibility = 'hidden';
    $('sort' + field).style.fontWeight = 'bold';
    $('sort' + field).style.textDecoration = 'none';
    $('sortSpan' + field).style.backgroundColor = '#0075B1';
    $('arrow' + field).style.visibility = 'visible';
}*/

/*function toggleSort(field, fieldName) {
	var arrowField = $('arrow' + field);
	
	if (fieldName == searchResults.curSortBy) {
    	if (searchResults.sortDirection[fieldName] == 1) {
    		arrowField.update('&darr;');
    	} else {
    		arrowField.update('&uarr;');
    	}
    	
    } else {
    	setSortFields(field);    
    }

}*/

/*function doSortBy(field) {
    if (pageParams.showingPopular) {
    	pageParams.showingPopular = false;
    	doSearch();
    }
	toggleSort(field, mapToOldSortFields[field]);
    searchResults.sortBy(mapToOldSortFields[field]);
    var results = document.getElementById("popularHotels");
    results.innerHTML = tmpl("hotel_search_tmpl", searchResults);
}*/

function doShowAll() { doSortBy(2); }

/*
function adjustStars(min, max) {
    for (i = 5; i > 0; i--) {
        minStar = $('min' + i);
        maxStar = $('max' + i);
        
        if  (i > min) {
        	minStar.style.visibility = 'hidden';
        	minStar.style.width = 0;
        } else {
        	minStar.style.width = '8px';
        	minStar.style.visibility = 'visible';
        }
        
        if  (i > max) {
        	maxStar.style.visibility = 'hidden';
        	maxStar.style.width = 0;
        } else {
        	maxStar.style.width = '8px';
        	maxStar.style.visibility = 'visible';
        }
        
    }
}*/

function getShortlist() {
    
    if (upid) {
    
	    new Ajax.Request('/frontend/shortlist/get/' + upid + '/', 
	        {method:'get', 
	        onSuccess: function(transport){processShortlist(transport.responseText.evalJSON(true));}
	    });
	            
    }
    
}


function toggleShortlistExpand() {
    var numItems = $('shortlist').getElementsByTagName("li").length;
    var prevSlLimit = slLimit;
    
    if (slLimit < 1) {
        slLimit = 5;
        var display = "none";
        $('slMore').innerHTML = "show more ...";        
    } else {
        slLimit = 0;
        var display = "list-item";
        $('slMore').innerHTML = "show less&nbsp;";
    }
    
    for (i = slLimit; i < numItems; i++) {
        $('sli_' + i).style.display = display;
    } 

}


/**
 * Display the shortlist items in the shortlist fragment.
 */
function processShortlist(data) {
	if (data['page'] && data['page'] == 'login') {
        doLogin("getShortlist");
    }
    
    var oldShortlistedHotels = shortlistedHotels;
    shortlistedHotels = new Array();
    
    if (data['username'])
        username = data['username'];
        
    var hotels = data['hotels'];
    var numHotels = hotels ? hotels.length : 0;

    var retries = 0;
     
    function setShortlist() {
        retries++;

	    if (!$('shortlist')) {
	        if (retries < 10) setTimeout(function() { setShortlist(); },  retries * 1000);
	        return;
	    }
	    
	    $('shortlist').update('<ul style="margin:0px;padding:0px;overflow:hidden;">');
	    
	    for (var i = 0; i < numHotels; i++) {
	        sl = $('shortlist').innerHTML;
	        displayVal = (slLimit > 0 && i >= slLimit) ? "none" : "list-item";
	        $('shortlist').update(sl + '<li id="sli_' + i + '" style=";padding:1px;padding-left:3;list-style:none;border:none;display:' + displayVal + ';text-align:left;font-size:10px;"><div id="slh_' + hotels[i]['HotelId'] + '" style="_float:left;overflow:hidden;background-color:#FFFFFF";><div class="label" style="float:left;overflow: hidden;font-size:11;width:88%"><a href="' + hotels[i]['DestinationUrl'] + '">' + hotels[i]['HotelName'] + ' </a><font style="font-style:italic;font-size:10;color:#777777;white-space:nowrap">- ' + hotels[i]['Destination'] + '</font></div><div class="label" style="color:#0075B1;float:right;padding:0px;margin:0px;overflow:hidden;cursor:pointer;font-size:9;width:3%;_padding-right:5px;" onclick="removeFromShortlist(\'' + hotels[i]['HotelId'] + '\')">x</div></div></li>');
	        shortlistedHotels.push(hotels[i]['HotelId']);
	        checkShortlistIcon(hotels[i]['HotelId']);
	    }
	    
	    if (numHotels > slLimit) {
	        expandVal = (slLimit > 0) ? "show more ..." : "show less&nbsp;";
	        $('shortlist').update($('shortlist').innerHTML + '<div id="slMore" class="label" style="color:#0075B1;float:right;padding-right:0px;margin:0px;overflow:hidden;cursor:pointer;font-size:9px;" onclick="toggleShortlistExpand()">' + expandVal + '</div>');
	    }
	
	    $('shortlist').update($('shortlist').innerHTML + '</ul>');
	    
	    for (var i = 0; i < oldShortlistedHotels.length; i++) {
	        checkShortlistIcon(oldShortlistedHotels[i]);
	    }
	    
	    $('clearAll').style.display = (numHotels > 0) ? "inline" :"none";
	    $('signInToSave').innerHTML = (numHotels > 0) ? "to save.&nbsp;&nbsp;" : "to view or save. &nbsp;";
	    toggleLoginLinks();
	    $('goBack').style.display = "none"; 
	    $('heading').style.display = "inline";
	    
	    
	    
//	    if (shortlistedHotels.length > 0) {
//		    var arrayStr = '';
//		    for (i = 0; i < shortlistedHotels.length;i++) {
//		    	arrayStr = arrayStr + shortlistedHotels[i] + ', ';
//		    }
//		    arrayStr = arrayStr + '0';
//		    
//		    _MAP_PARAMS_ = {
//		    	     "init" : function(m) {
//		    	          m.loadLocations(arrayStr);
//		    	     },
//		    	     "mapType"  : "Hybrid"
//		    	 };
//		    var _hotelMap = new HotelMap($("_map_container"), _MAP_PARAMS_);
//	    }
	    
    }
    setShortlist();   
    
    
}



function loadFragment(fragmentName, targetElementId, callbackFunction) {
    
    new Ajax.Request('/frontend/fragment/' + fragmentName + '/', 
        {method:'post',
        onSuccess: function(transport){setFragment(transport.responseText, targetElementId, callbackFunction);}
    });  
}


function setFragment(data, targetElementId, callbackFunction) {
    //removeOverlay('shortlistOverlay');
    $(targetElementId).innerHTML = data;
    if (callbackFunction) {
        callbackFunction();
    }
    
}


function doLogin(callback) {
    
    /* if fragment has been loaded */
    if ($('loginForm')) {
	    var u = $('username').value;
	    var p = $('password').value;
	    var r = $('remember').checked;
	
	    $("usernameError").innerHTML = "";
	    $("passwordError").innerHTML = "";
	         
		new Ajax.Request('/frontend/login?signin[username]=' + u + '&signin[password]=' + p + '&signin[remember]=' + r + '&callback=' + callback + '/', 
		    {method:'post',
		    onSuccess: function(transport){processLogin(transport.responseText.evalJSON(true), callback);},
		    onError: function(transport){showError(transport.responseText.evalJSON(true), callback);}
		});  
        
    } else {
        loadFragment("login", "shortlist", function (){$('loginCallback').value = callback});
        toggleSignInRegisterLinks(true);
    }

}

function setLoginCallBack(callback) {
    $('loginCallback').value = callback;
}


function doRegister(callback) {
    
    if ($('registerForm')) {
        var u = $('username').value;
        var p = $('password').value;
    
        $("usernameError").innerHTML = "";
        $("passwordError").innerHTML = "";
            
        new Ajax.Request('/frontend/user_register?register[username]=' + u + '&register[password]=' + p + '&callback=' + callback + '&upid=' +upid, 
            {method:'post',
            onSuccess: function(transport){processRegister(transport.responseText.evalJSON(true), callback);}
        });  
        
    } else {
        loadFragment("register", "shortlist", function (){$('loginCallback').value = callback});  
        toggleSignInRegisterLinks(false); 
    }

}


function doSendPassword(callback) {
    
    if ($('passwordForm')) {
        var u = $('username').value;
        $("usernameError").innerHTML = "";
            
        new Ajax.Request('/frontend/user/password?password[username]=' + u + '&upid=' +upid, 
            {method:'post',
            onSuccess: function(transport){processPassword(transport.responseText.evalJSON(true), callback);}
        });  
        
    } else {
        loadFragment("register", "shortlist", function (){$('loginCallback').value = callback});  
        toggleSignInRegisterLinks(false);
    }

}

 
function doPasswordReset(callback) {
    
    if ($('passwordResetForm')) {
        var p = $('password').value;
        var u = $('username').value;
        var h = $('hash').value;
    
        $("passwordError").innerHTML = "";
            
        new Ajax.Request('/frontend/user/passwordReset?username=' + u + '&register[password]=' + p + '&hash=' + h, 
            {method:'post',
            onSuccess: function(transport){processPasswordReset(transport.responseText.evalJSON(true), callback);}
        });  
        
    }

}


function logout() {    
    new Ajax.Request('/frontend/logout', {method:'post'});  
    delCookie('upid');
    processShortlist('');
    upid = null;
    username = null;
    toggleLoginLinks();
} 


function toggleLoginLinks() {

    if (username) {
        $('signInOr').style.display = "none";
        $('signInToSave').style.display = "none";
        $('signIn').style.display = "none";
        $('register').style.display = "none";
        $('goBack').style.display = "none";
        $('signOut').style.display = "inline";
    } else {
        $('signOut').style.display = "none";
        $('signInOr').style.display = "inline";
        $('signInToSave').style.display = "inline";
        $('signIn').style.display = "inline";
        $('register').style.display = "inline";
    }
    
}


function toggleSignInRegisterLinks(isSignIn) {
	$('signInOr').style.display = "none";
	$('signInToSave').style.display = "none";
	$('register').style.display = (!isSignIn ? "none" : "inline");
	$('signIn').style.display = (isSignIn ? "none" : "inline"); 
	if (upid) {$('goBack').style.display = "inline";}
 }

   
function processLogin(data, callback) {

    if (data['page'] == "login") {
        setErrorMsg(data, 'username');
        setErrorMsg(data, 'password');
    } else {  
        upid = data["upid"];
        username = data["username"];

        //if (data["remember"]) {
		    var expdate = new Date ();
		    expdate.setTime (expdate.getTime() + (1000 * 60 * 60 * 1));
		    setCookie ("upid", upid, expdate);
        //}

        toggleLoginLinks();  
        window[callback]();
    }
        
}

function setErrorMsg(data, paramName) {
    
    if (data['errors'][paramName]) {
        $(paramName + "Error").innerHTML = data['errors'][paramName]; 
    } else {
        $(paramName + "Error").innerHTML = "";
    }

}


function processRegister(data, callback) {

   if (data['page'] == "register") {
        setErrorMsg(data, 'username');
        setErrorMsg(data, 'password');
   } else { 
       upid = data["upid"];
       username = data["username"];
       toggleLoginLinks();
       window[callback]();
   }    

}


function processPasswordReset(data, callback) {
    
    if (data['page'] == "passwordReset") {
        setErrorMsg(data, 'username');
        setErrorMsg(data, 'password');
    } else if (data['page'] == "passwordDone") {      
        $('shortlist').innerHTML='<label style="color: #0075B1;padding-left:5px;font-size:12px;font-weight:bold;" >Your password has been reset.</label>';        
    } else { 
       upid = data["upid"];
       toggleLoginLinks();
       window[callback]();
    }    
}


function processPassword(data, callback) {
    //alert("processRegister: " + data + " - " + callback);
    if (data['page'] == "password") {
        setErrorMsg(data, 'username');
   } else if (data['page'] == "passwordSent") {
        $('shortlist').innerHTML='<label style="color: #0075B1;padding-left:5px;font-size:12px;font-weight:bold;" >An email has been sent to you containing a password reset link.</label>';
        toggleSignInRegisterLinks(false);
   } else { 
       upid = data["upid"];
       toggleLoginLinks();
       window[callback]();
   }    
}



function toggleShortlist(hotelId) {

    if (shortlistedHotels.indexOf(hotelId) >= 0) {
        removeFromShortlist(hotelId);        
    } else {
        addToShortlist(hotelId);
    }

}


function clickShortlist(hotelId, prefix) {
    label = $(prefix + 'sllbl_' + hotelId);
    
    if (label) label.className = "shortlistLabelPress";
}


function doShortlistMoveEffect(hotelId) {
	hotelName = $('hn_' + hotelId);
	newLabel = new Element('label', { id: 'move_' + hotelId,'class': 'hotelName1Move', href: '/foo.html' }).update(hotelName.innerHTML);
	
	if (fxOk && $('popularHotels')) {
		$('popularHotels').insert( { bottom:  newLabel} );
		newLabel.clonePosition(hotelName);
		startOffset = newLabel.viewportOffset();
		endOffset = $('shortlist').viewportOffset();	

		new Effect.Move(newLabel, { x:  endOffset['left'] - startOffset['left'], y: endOffset['top'] - startOffset['top'], mode: 'relative', duration: 0.5 });
		new Effect.Fade(newLabel, {delay: .3, duration: .5 });
	}
	
	return newLabel;
}

function addToShortlist(hotelId) {
	var newLabel = doShortlistMoveEffect(hotelId);
	
    if (!upid) {
       getAnonUser(function(){addToShortlist(hotelId);});
    } else {
        clickShortlist(hotelId, '')  /* TODO make work for other fragments (prefix) */
        new Ajax.Request('/frontend/shortlist/add/' + upid + '/' + hotelId + '/', 
            {method:'get',
            onSuccess: function(transport){processShortlist(transport.responseText.evalJSON(true));newLabel.remove();}
        });  
        
    }
    
    
}


function removeFromShortlist(hotelId) {
    
    if (upid) {
        clickShortlist(hotelId, '')
        
        new Ajax.Request('/frontend/shortlist/remove/' + upid + '/' + hotelId + '/', 
            {method:'get',
            onSuccess: function(transport){processShortlist(transport.responseText.evalJSON(true));}
        });  
      
    }
    
}


function checkShortlistIcon(hotelId) {
    checkShortlist(hotelId, "");
    if ($('allHotels')) checkShortlist(hotelId, "ah_");
    
}

function checkShortlist(hotelId, prefix) {
    image = $(prefix + 'sl_' + hotelId);
    label = $(prefix + 'sllbl_' + hotelId);
    hotelName = $(prefix + 'hn_' + hotelId);
    table = $(prefix + 'ht_' + hotelId);
    
    if (image && label && hotelName && table) { 
        image.onload = "";
        
        if ((shortlistedHotels.indexOf(hotelId) >= 0)) {
            image.src = "/chang/images/shortlist_right_in_y.gif";
            table.title = "Remove " + hotelName.innerHTML + " from your shortlist";
            label.innerHTML = "&nbsp;shortlisted&nbsp;";
            label.className = "shortlistLabel";
        } else {
            image.src = "/chang/images/shortlist_right_out_y.gif";     
            label.innerHTML = "&nbsp;add to shortlist&nbsp;"; 
            table.title = "Add " + hotelName.innerHTML + " to your shortlist";
            label.className = "shortlistLabel";
        }
    
    } 
    
}




function clearShortlist() {

    if (upid) {

        // processShortlist(data) needs to be defined somewhere.
        new Ajax.Request('/frontend/shortlist/clear/' + upid + '/', 
            {method:'get',
            onSuccess: function(transport){processShortlist(transport.responseText.evalJSON(true));}
        });          
    }
    
}


function setAnonUser(data, callbackFunction) {
	upid = data["upid"];
	var expdate = new Date ();
	expdate.setTime (expdate.getTime() + (1000 * 60 * 60 * 24));
	setCookie ("upid", upid, expdate);

    if (callbackFunction) {
        callbackFunction();
    }
   
}


function getAnonUser(callbackFunction) {
	upid = getCookie("upid");
	
	if (!upid) {
	
	    new Ajax.Request('/frontend/anonymous_user/create/', 
	        {method:'get', 
	        onSuccess: function(transport){setAnonUser(transport.responseText.evalJSON(true), callbackFunction);}
	    });        
	
	} 

}

function getCountry() {
    countryCode = getCookie("cc");
    if (!countryCode) {
        new Ajax.Request('/recommend/geoip/', 
            {method:'get', 
            onSuccess: function(transport){setCountry(transport.responseText.evalJSON(true));}
        });        
    
    } else {
        setCountry(countryCode);
    }
    
    return countryCode;
}

function setCountry(data) {
    countryCode = data;
    if (countryCode == "" || countryCode == "--") {countryCode = "US";}
    var expdate = new Date ();
    expdate.setTime (expdate.getTime() + (1000 * 60 * 60));
    setCookie ("cc", data, expdate);
    pageParams.countryCode = countryCode;
    countryHasBeenSet();
}


function replaceImage(image, imagePath) {
    if (!imagePath) {
        image.src = "/chang/images/space.gif";
    } else {
        image.src = imagePath;
    }
}

// standard cookie functions

function getCookie (name) {
	var dcookie = document.cookie; 
	var cname = name + "=";
	var clen = dcookie.length;
	var cbegin = 0;
	while (cbegin < clen) {
		var vbegin = cbegin + cname.length;
        if (dcookie.substring(cbegin, vbegin) == cname) { 
		  var vend = dcookie.indexOf (";", vbegin);
		  if (vend == -1) vend = clen;
		      return unescape(dcookie.substring(vbegin, vend));		    
		}
	    cbegin = dcookie.indexOf(" ", cbegin) + 1;
	    if (cbegin == 0) break;
	}
	return null;
}

function setCookie (name, value, expires) {
    if (!expires) expires = new Date();
    document.cookie = name + "=" + escape (value) + "; expires=" + expires.toGMTString() +  "; path=/";
}

function delCookie (name) {
	var expireNow = new Date();
	document.cookie = name + "=" + "; expires=Thu, 01-Jan-70 00:00:01 GMT" +  "; path=/";
}

function _array_split_items_per_group(arr, numGroups) {
    var numItems = arr.length;
    if (numItems % numGroups == 0) {
        return numItems / numGroups;
    }
    return Math.ceil(numItems / numGroups);
}

function array_partition(arr, itemsPerGroup) {
    var currItem = 0;
    var groups = [];
    var currGroup = [];
    for (var i = 0; i < arr.length; i++) {
        currGroup.push(arr[i]);
        currItem++;
        if (currItem == itemsPerGroup) {
            groups.push(currGroup);
            currGroup = [];
            currItem = 0;
        }
    }
    if (currGroup.length > 0) {
        groups.push(currGroup);
    }
    return groups;
}

function array_split(arr, numGroups) {
    var itemsPerGroup = _array_split_items_per_group(arr, numGroups);
    return array_partition(arr, itemsPerGroup);
}


/**
 * HotelSearchResults Class
 */
function HotelSearchResults() {
	this.sortDirection = {"Popular": 1, "HotelName": 1, "Rating": -1, "LowRate": 1};
	this.curSortBy = "Popular";
	this.allHotels = new Array();
	this.resultHotels = new Array();
	this.hotelPages = new Array();
	this.pageSize = 10;
	this.curPage = 0;
	
	HotelSearchResults.prototype.setHotels = function(hotels) {
		this.allHotels = hotels;
		this.resultHotels = hotels;
		this.sort();
		this._reset();
		document.fire("searchResults:hotelsLoaded");
	}

	HotelSearchResults.prototype.filterHotels = function(filter) {
		this.resultHotels = new Array();
		
		for (var i = 0; i < this.allHotels.length; i++) {
			if (filter.isMatch(this.allHotels[i]))  this.resultHotels.push(this.allHotels[i]);
		}
		
		document.fire("searchResults:listChange", this.resultHotels);
		this._reset();
	}
	
	
	HotelSearchResults.prototype._reset = function() {
		this.curPage = 0;
		
		if (this.resultHotels.length > 0) {
			this.hotelPages = array_partition(this.resultHotels, this.pageSize);
		} else {
			this.hotelPages = new Array();
			this.hotelPages.push(new Array());
		}
		
	}

	HotelSearchResults.prototype.getCurPage = function() {
		return this.hotelPages[this.curPage];
	}

	HotelSearchResults.prototype.setNextPage = function() {
		if (this.curPage < this.hotelPages.length + 1) this.curPage++;
	}
	
	HotelSearchResults.prototype.setPrevPage = function() {
		if (this.curPage > 0) this.curPage--;
	}

	HotelSearchResults.prototype.hasNextPage = function() {
		return (this.curPage < this.hotelPages.length - 1);
	}
	
	HotelSearchResults.prototype.hasPrevPage = function() {
		return this.curPage > 0;
	}

	HotelSearchResults.prototype.sortBy = function(by) {
		if (this.curSortBy == by) this.sortDirection[by] = this.sortDirection[by] * -1;
		this.curSortBy = by;
		this.sort();
	}

	HotelSearchResults.prototype.sort = function() {
		by = this.curSortBy;
		asc = this.sortDirection[by];

		switch (by) {
		    case "LowRate": 
		    case "Rating": this.resultHotels.sort( this._numComparator(by, asc));break;
		    case "HotelName": this.resultHotels.sort( this._stringComparator(by, asc));break;
		    default: return;
		  }    
		
		this._reset();
	}
	
	HotelSearchResults.prototype._numComparator = function(by, asc) {
		return function (a, b) { return (a[by] - b[by]) * asc; };
	}

	HotelSearchResults.prototype._stringComparator = function(by, asc) {
		return	function (a, b) {
					if ( a[by].toLowerCase() < b[by].toLowerCase() ) return -1 * asc;
					if ( a[by].toLowerCase() > b[by].toLowerCase() ) return 1 * asc;
					return 0;
				};
	}
	
}



/**
 * HotelSearchResults Class
 */
function HotelSearchFilter(minCategory, maxCategory, minRate, maxRate, dsb, hsb, destinationIds) {
	this.minCategory = minCategory == 1?0:minCategory;
	this.maxCategory = maxCategory;
	this.minRate = minRate;
	this.maxRate = maxRate;
	this.dsb = dsb;
	this.hsb = hsb;
	this.destinationIds = destinationIds;
	
	HotelSearchFilter.prototype.isMatch = function(hotelData) {
		var destinationMatch = false;
		var i = 0;

		while (!destinationMatch && i < this.destinationIds.length ) {
			destinationMatch = (hotelData["DestinationIDPath"].indexOf("/" + this.destinationIds[i++] + "/") > -1);
		}

		return destinationMatch &&
		       ((hotelData["Rating"] >= this.minCategory) && (hotelData["Rating"] <= this.maxCategory)) && 
			   ((parseInt(hotelData["LowRate"]) >= this.minRate) && (parseInt(hotelData["LowRate"]) <= this.maxRate)) && 
		       (this.hsb == (hotelData["SearchBits"] & this.hsb)) &&
		       (this.dsb == (hotelData["DestinationSearchBits"] & this.dsb));
	}
	
}

//Simple JavaScript Templating
//John Resig - http://ejohn.org/ - MIT Licensed
(function(){
    var cache = {};
    
   
    this.tmpl = function tmpl(str, data){
      // Figure out if we're getting a template, or if we need to
      // load the template - and be sure to cache the result.
        str = document.getElementById(str).value;
      //var fn = !/\W/.test(str) ?
        //cache[str] = cache[str] ||
       //   tmpl(document.getElementById(str).value) :
       
        // Generate a reusable function that will serve as a template
        // generator (and which will be cached).
        var functionBody = "var p=[],print=function(){p.push.apply(p,arguments);};" +
        
        // Introduce the data as local variables using with(){}
        "with(obj){p.push('" +
          
        // Convert the template into pure JavaScript
        str
          .replace(/[\r\t\n]/g, " ")
          .split("<%").join("\t")
          .replace(/((^|%>)[^\t]*)'/g, "$1\r")
          .replace(/\t=(.*?)%>/g, "',$1,'")
          .split("\t").join("');")
          .split("%>").join("p.push('")
          .split("\r").join("\\'")
      + "');}return p.join('');";
        //console.log(functionBody);
        var fn = new Function("obj",functionBody);
  // );
     
      // Provide some basic currying to the user
      return data ? fn( data ) : fn;
    };
})();


/*  Prototype JavaScript framework, version 1.6.0.3
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.3',

  Browser: {
    IE:     !!(window.attachEvent &&
      navigator.userAgent.indexOf('Opera') === -1),
    Opera:  navigator.userAgent.indexOf('Opera') > -1,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 &&
      navigator.userAgent.indexOf('KHTML') === -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    SelectorsAPI: !!document.querySelector,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div')['__proto__'] &&
      document.createElement('div')['__proto__'] !==
        document.createElement('form')['__proto__']
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value;
        value = (function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method);

        value.valueOf = method.valueOf.bind(method);
        value.toString = method.toString.bind(method);
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return !!(object && object.nodeType == 1);
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1]
      .replace(/\s+/g, '').split(',');
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  defer: function() {
    var args = [0.01].concat($A(arguments));
    return this.delay.apply(this, args);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.stripTags().replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    try {
      this._each(function(value) {
        iterator.call(context, value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    var index = -number, slices = [], array = this.toArray();
    if (number < 1) return array;
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator.call(context, value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator.call(context, value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator.call(context, value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    var result;
    this.each(function(value, index) {
      if (iterator.call(context, value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator.call(context, value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    this.each(function(value, index) {
      memo = iterator.call(context, memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator.call(context, value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    return this.map(function(value, index) {
      return {
        value: value,
        criteria: iterator.call(context, value, index)
      };
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    // In Safari, only use the `toArray` method if it's not a NodeList.
    // A NodeList is a function, has an function `item` property, and a numeric
    // `length` property. Adapted from Google Doctype.
    if (!(typeof iterable === 'function' && typeof iterable.length ===
        'number' && typeof iterable.item === 'function') && iterable.toArray)
      return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator, context) {
    $R(0, this, true).each(iterator, context);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      // simulating poorly supported hasOwnProperty
      if (this._object[key] !== Object.prototype[key])
        return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.inject([], function(results, pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return results.concat(values.map(toQueryPair.curry(key)));
        } else results.push(toQueryPair(key, values));
        return results;
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
  if (element) this.Element.prototype = element.prototype;
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    element = $(element);
    element.style.display = 'none';
    return element;
  },

  show: function(element) {
    element = $(element);
    element.style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      Element.select(element, expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (ancestor.contains)
      return ancestor.contains(element) && ancestor !== element;

    while (element = element.parentNode)
      if (element == ancestor) return true;

    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value || value == 'auto') {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = element.getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (Prototype.Browser.Opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName.toUpperCase() == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return element;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return element;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      // IE throws an error if element is not in document
      try { element.offsetParent }
      catch(e) { return $(document.body) }
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        try { element.offsetParent }
        catch(e) { return Element._returnOffset(0,0) }
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
    function(proceed, element) {
      try { element.offsetParent }
      catch(e) { return Element._returnOffset(0,0) }
      return proceed(element);
    }
  );

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName.toUpperCase() == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return !!(node && node.specified);
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div')['__proto__']) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div')['__proto__'];
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName.toUpperCase(), property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName)['__proto__'];
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { }, B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      if (B.WebKit && !document.evaluate) {
        // Safari <3.0 needs self.innerWidth/Height
        dimensions[d] = self['inner' + D];
      } else if (B.Opera && parseFloat(window.opera.version()) < 9.5) {
        // Opera <9.5 needs document.body.clientWidth/Height
        dimensions[d] = document.body['client' + D]
      } else {
        dimensions[d] = document.documentElement['client' + D];
      }
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum's DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();

    if (this.shouldUseSelectorsAPI()) {
      this.mode = 'selectorsAPI';
    } else if (this.shouldUseXPath()) {
      this.mode = 'xpath';
      this.compileXPathMatcher();
    } else {
      this.mode = "normal";
      this.compileMatcher();
    }

  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(e))
      return false;

    return true;
  },

  shouldUseSelectorsAPI: function() {
    if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

    if (!Selector._div) Selector._div = new Element('div');

    // Make sure the browser treats the selector as valid. Test on an
    // isolated element to minimize cost of this check.
    try {
      Selector._div.querySelector(this.expression);
    } catch(e) {
      return false;
    }

    return true;
  },

  compileMatcher: function() {
    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
            new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    var e = this.expression, results;

    switch (this.mode) {
      case 'selectorsAPI':
        // querySelectorAll queries document-wide, then filters to descendants
        // of the context element. That's not what we want.
        // Add an explicit context to the selector if necessary.
        if (root !== document) {
          var oldId = root.id, id = $(root).identify();
          e = "#" + id + " " + e;
        }

        results = $A(root.querySelectorAll(e)).map(Element.extend);
        root.id = oldId;

        return results;
      case 'xpath':
        return document._getElementsByXPath(this.xpath, root);
      default:
       return this.matcher(root);
    }
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0)]",
      'checked':     "[@checked]",
      'disabled':    "[(@disabled) and (@type!='hidden')]",
      'enabled':     "[not(@disabled) and (@type!='hidden')]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[((?:[\w]+:)?[\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || node.firstChild) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled && (!node.type || node.type !== 'hidden'))
          results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
    '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
    '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase() +
     '-').include('-' + (v || "").toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, value) {
    if (Object.isUndefined(value))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, currentValue, single = !Object.isArray(value);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        currentValue = this.optionValue(opt);
        if (single) {
          if (currentValue == value) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = value.include(currentValue);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      event = Event.extend(event);

      var node          = event.target,
          type          = event.type,
          currentTarget = event.currentTarget;

      if (currentTarget && currentTarget.tagName) {
        // Firefox screws up the "click" event when moving between radio buttons
        // via arrow keys. It also screws up the "load" and "error" events on images,
        // reporting the document as the target instead of the original image.
        if (type === 'load' || type === 'error' ||
          (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
            && currentTarget.type === 'radio'))
              node = currentTarget;
      }
      if (node.nodeType == Node.TEXT_NODE) node = node.parentNode;
      return Element.extend(node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      var docElement = document.documentElement,
      body = document.body || { scrollLeft: 0, scrollTop: 0 };
      return {
        x: event.pageX || (event.clientX +
          (docElement.scrollLeft || body.scrollLeft) -
          (docElement.clientLeft || 0)),
        y: event.pageY || (event.clientY +
          (docElement.scrollTop || body.scrollTop) -
          (docElement.clientTop || 0))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents")['__proto__'];
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }


  // Internet Explorer needs to remove event handlers on page unload
  // in order to avoid memory leaks.
  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  // Safari has a dummy event handler on page unload so that it won't
  // use its bfcache. Safari <= 3.1 has an issue with restoring the "document"
  // object when page is returned to via the back button using its bfcache.
  if (Prototype.Browser.WebKit) {
    window.addEventListener('unload', Prototype.emptyFunction, false);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();
// script.aculo.us scriptaculous.js v1.8.2, Tue Nov 18 18:30:58 +0100 2008

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// For details, see the script.aculo.us web site: http://script.aculo.us/

var Scriptaculous = {
  Version: '1.8.2',
  require: function(libraryName) {
    // inserting via DOM fails in Safari 2.0, so brute force approach
    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
  },
  REQUIRED_PROTOTYPE: '1.6.0.3',
  load: function() {
    function convertVersionString(versionString) {
      var v = versionString.replace(/_.*|\./g, '');
      v = parseInt(v + '0'.times(4-v.length));
      return versionString.indexOf('_') > -1 ? v-1 : v;
    }

    if((typeof Prototype=='undefined') ||
       (typeof Element == 'undefined') ||
       (typeof Element.Methods=='undefined') ||
       (convertVersionString(Prototype.Version) <
        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
       throw("script.aculo.us requires the Prototype JavaScript framework >= " +
        Scriptaculous.REQUIRED_PROTOTYPE);

    var js = /scriptaculous\.js(\?.*)?$/;
    $$('head script[src]').findAll(function(s) {
      return s.src.match(js);
    }).each(function(s) {
      var path = s.src.replace(js, ''),
      includes = s.src.match(/\?.*load=([a-z,]*)/);
      //(includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(
      //(includes ? includes[1] : 'effects').split(',').each(
      // function(include) { Scriptaculous.require(path+include+'.js') });
    });
  }
};

Scriptaculous.load();
// script.aculo.us effects.js v1.8.2, Tue Nov 18 18:30:58 +0100 2008

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

// converts rgb() and #xxx to #xxxxxx format,
// returns self (or first argument) if not convertable
String.prototype.parseColor = function() {
  var color = '#';
  if (this.slice(0,4) == 'rgb(') {
    var cols = this.slice(4,this.length-1).split(',');
    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);
  } else {
    if (this.slice(0,1) == '#') {
      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();
      if (this.length==7) color = this.toLowerCase();
    }
  }
  return (color.length==7 ? color : (arguments[0] || this));
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue :
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue :
      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ?
        Element.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);
  element.setStyle({fontSize: (percent/100) + 'em'});
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

Element.getInlineOpacity = function(element){
  return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + .5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + .75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + .5;
    },
    pulse: function(pos, pulses) {
      return (-Math.cos((pos*((pulses||5)-.5)*2)*Math.PI)/2) + .5;
    },
    spring: function(pos) {
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6));
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';

    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character),
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') ||
        Object.isFunction(element)) &&
       (element.length))
      elements = element;
    else
      elements = $(element).childNodes;

    var options = Object.extend({
      speed: 0.1,
      delay: 0.0
    }, arguments[2] || { });
    var masterDelay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
    });
  },
  PAIRS: {
    'slide':  ['SlideDown','SlideUp'],
    'blind':  ['BlindDown','BlindUp'],
    'appear': ['Appear','Fade']
  },
  toggle: function(element, effect) {
    element = $(element);
    effect = (effect || 'appear').toLowerCase();
    var options = Object.extend({
      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ?
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
  initialize: function() {
    this.effects  = [];
    this.interval = null;
  },
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  add: function(effect) {
    var timestamp = new Date().getTime();

    var position = Object.isString(effect.options.queue) ?
      effect.options.queue : effect.options.queue.position;

    switch(position) {
      case 'front':
        // move unstarted effects after this effect
        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
            e.startOn  += effect.finishOn;
            e.finishOn += effect.finishOn;
          });
        break;
      case 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        break;
      case 'end':
        // start effect after last queued effect has finished
        timestamp = this.effects.pluck('finishOn').max() || timestamp;
        break;
    }

    effect.startOn  += timestamp;
    effect.finishOn += timestamp;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);

    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  remove: function(effect) {
    this.effects = this.effects.reject(function(e) { return e==effect });
    if (this.effects.length == 0) {
      clearInterval(this.interval);
      this.interval = null;
    }
  },
  loop: function() {
    var timePos = new Date().getTime();
    for(var i=0, len=this.effects.length;i<len;i++)
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;

    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
    this.currentFrame = 0;
    this.state        = 'idle';
    this.startOn      = this.options.delay*1000;
    this.finishOn     = this.startOn+(this.options.duration*1000);
    this.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;

    this.render = (function() {
      function dispatch(effect, eventName) {
        if (effect.options[eventName + 'Internal'])
          effect.options[eventName + 'Internal'](effect);
        if (effect.options[eventName])
          effect.options[eventName](effect);
      }

      return function(pos) {
        if (this.state === "idle") {
          this.state = "running";
          dispatch(this, 'beforeSetup');
          if (this.setup) this.setup();
          dispatch(this, 'afterSetup');
        }
        if (this.state === "running") {
          pos = (this.options.transition(pos) * this.fromToDelta) + this.options.from;
          this.position = pos;
          dispatch(this, 'beforeUpdate');
          if (this.update) this.update(pos);
          dispatch(this, 'afterUpdate');
        }
      };
    })();

    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ?
        'global' : this.options.queue.scope).add(this);
  },
  loop: function(timePos) {
    if (timePos >= this.startOn) {
      if (timePos >= this.finishOn) {
        this.render(1.0);
        this.cancel();
        this.event('beforeFinish');
        if (this.finish) this.finish();
        this.event('afterFinish');
        return;
      }
      var pos   = (timePos - this.startOn) / this.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ?
        'global' : this.options.queue.scope).remove(this);
    this.state = 'finished';
  },
  event: function(eventName) {
    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
    if (this.options[eventName]) this.options[eventName](this);
  },
  inspect: function() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    this.effects.invoke('render', position);
  },
  finish: function(position) {
    this.effects.each( function(effect) {
      effect.render(1.0);
      effect.cancel();
      effect.event('beforeFinish');
      if (effect.finish) effect.finish(position);
      effect.event('afterFinish');
    });
  }
});

Effect.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(),
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) :
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    // make this work on IE on elements without 'layout'
    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
      this.element.setStyle({zoom: 1});
    var options = Object.extend({
      from: this.element.getOpacity() || 0.0,
      to:   1.0
    }, arguments[1] || { });
    this.start(options);
  },
  update: function(position) {
    this.element.setOpacity(position);
  }
});

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
    });
  }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
  return new Effect.Move(element,
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};

Effect.Scale = Class.create(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      scaleX: true,
      scaleY: true,
      scaleContent: true,
      scaleFromCenter: false,
      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
      scaleFrom: 100.0,
      scaleTo:   percent
    }, arguments[2] || { });
    this.start(options);
  },
  setup: function() {
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = this.element.getStyle('position');

    this.originalStyle = { };
    ['top','left','width','height','fontSize'].each( function(k) {
      this.originalStyle[k] = this.element.style[k];
    }.bind(this));

    this.originalTop  = this.element.offsetTop;
    this.originalLeft = this.element.offsetLeft;

    var fontSize = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].each( function(fontSizeType) {
      if (fontSize.indexOf(fontSizeType)>0) {
        this.fontSize     = parseFloat(fontSize);
        this.fontSizeType = fontSizeType;
      }
    }.bind(this));

    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;

    this.dims = null;
    if (this.options.scaleMode=='box')
      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
    if (/^content/.test(this.options.scaleMode))
      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
    if (!this.dims)
      this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
  },
  update: function(position) {
    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
    if (this.options.scaleContent && this.fontSize)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + 'px';
    if (this.options.scaleFromCenter) {
      var topd  = (height - this.dims[0])/2;
      var leftd = (width  - this.dims[1])/2;
      if (this.elementPositioning == 'absolute') {
        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
      } else {
        if (this.options.scaleY) d.top = -topd + 'px';
        if (this.options.scaleX) d.left = -leftd + 'px';
      }
    }
    this.element.setStyle(d);
  }
});

Effect.Highlight = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    // Prevent executing on elements not in the layout flow
    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldStyle = { };
    if (!this.options.keepBackgroundImage) {
      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
      this.element.setStyle({backgroundImage: 'none'});
    }
    if (!this.options.endcolor)
      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
    if (!this.options.restorecolor)
      this.options.restorecolor = this.element.getStyle('background-color');
    // init color calculations
    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
  },
  update: function(position) {
    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
  },
  finish: function() {
    this.element.setStyle(Object.extend(this.oldStyle, {
      backgroundColor: this.options.restorecolor
    }));
  }
});

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
  scrollOffsets = document.viewport.getScrollOffsets(),
  elementOffsets = $(element).cumulativeOffset();

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()); }
  );
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  var options = Object.extend({
    from: element.getOpacity() || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) {
      if (effect.options.to!=0) return;
      effect.element.hide().setStyle({opacity: oldOpacity});
    }
  }, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show();
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = {
    opacity: element.getInlineOpacity(),
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  return new Effect.Parallel(
   [ new Effect.Scale(element, 200,
      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }),
     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ],
     Object.extend({ duration: 1.0,
      beforeSetupInternal: function(effect) {
        Position.absolutize(effect.effects[0].element);
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

Effect.BlindUp = function(element) {
  element = $(element);
  element.makeClipping();
  return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false,
      scaleX: false,
      restoreAfterFinish: true,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping();
      }
    }, arguments[1] || { })
  );
};

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({
    scaleContent: false,
    scaleX: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({height: '0px'}).show();
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    duration: 0.4,
    from: 0,
    transition: Effect.Transitions.flicker,
    afterFinishInternal: function(effect) {
      new Effect.Scale(effect.element, 1, {
        duration: 0.3, scaleFromCenter: true,
        scaleX: false, scaleContent: false, restoreAfterFinish: true,
        beforeSetup: function(effect) {
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      });
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: 100, sync: true }),
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned();
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        }
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}); }}); }}); }}); }}); }});
};

Effect.SlideDown = function(element) {
  element = $(element).cleanWhitespace();
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({
    scaleContent: false,
    scaleX: false,
    scaleFrom: window.opera ? 0 : 1,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().setStyle({height: '0px'}).show();
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
    }, arguments[1] || { })
  );
};

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false,
    scaleX: false,
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
    }
   }, arguments[1] || { })
  );
};

// Bug in opera makes the TD containing this element expand for a instance after finish
Effect.Squish = function(element) {
  return new Effect.Scale(element, window.opera ? 1 : 0, {
    restoreAfterFinish: true,
    beforeSetup: function(effect) {
      effect.element.makeClipping();
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping();
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.full
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var initialMoveX, initialMoveY;
  var moveX, moveY;

  switch (options.direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0;
      break;
    case 'top-right':
      initialMoveX = dims.width;
      initialMoveY = moveY = 0;
      moveX = -dims.width;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = dims.height;
      moveY = -dims.height;
      break;
    case 'bottom-right':
      initialMoveX = dims.width;
      initialMoveY = dims.height;
      moveX = -dims.width;
      moveY = -dims.height;
      break;
    case 'center':
      initialMoveX = dims.width / 2;
      initialMoveY = dims.height / 2;
      moveX = -dims.width / 2;
      moveY = -dims.height / 2;
      break;
  }

  return new Effect.Move(element, {
    x: initialMoveX,
    y: initialMoveY,
    duration: 0.01,
    beforeSetup: function(effect) {
      effect.element.hide().makeClipping().makePositioned();
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: dims.height, originalWidth: dims.width },
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
               effect.effects[0].element.setStyle({height: '0px'}).show();
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle);
             }
           }, options)
      );
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.none
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var moveX, moveY;

  switch (options.direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = dims.width;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = dims.height;
      break;
    case 'bottom-right':
      moveX = dims.width;
      moveY = dims.height;
      break;
    case 'center':
      moveX = dims.width / 2;
      moveY = dims.height / 2;
      break;
  }

  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({
         beforeStartInternal: function(effect) {
           effect.effects[0].element.makePositioned().makeClipping();
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { },
    oldOpacity = element.getInlineOpacity(),
    transition = options.transition || Effect.Transitions.linear,
    reverser   = function(pos){
      return 1 - transition((-Math.cos((pos*(options.pulses||5)*2)*Math.PI)/2) + .5);
    };

  return new Effect.Opacity(element,
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
    }, options), {transition: reverser}));
};

Effect.Fold = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height };
  element.makeClipping();
  return new Effect.Scale(element, 5, Object.extend({
    scaleContent: false,
    scaleX: false,
    afterFinishInternal: function(effect) {
    new Effect.Scale(element, 1, {
      scaleContent: false,
      scaleY: false,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });

    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        };
      }
    }
    this.start(options);
  },

  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 );
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return {
        style: property.camelize(),
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0),
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      );
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] =
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) +
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' +
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');

Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }

  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]);
  });

  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
      results[property] = css[property];
      return results;
    });
    if (!styles.opacity) styles.opacity = element.getOpacity();
    return styles;
  };
}

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element);
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) {
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    };
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each(
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);
// script.aculo.us dragdrop.js v1.8.2, Tue Nov 18 18:30:58 +0100 2008

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2008 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

if(Object.isUndefined(Effect))
  throw("dragdrop.js requires including script.aculo.us' effects.js library");

var Droppables = {
  drops: [],

  remove: function(element) {
    this.drops = this.drops.reject(function(d) { return d.element==$(element) });
  },

  add: function(element) {
    element = $(element);
    var options = Object.extend({
      greedy:     true,
      hoverclass: null,
      tree:       false
    }, arguments[1] || { });

    // cache containers
    if(options.containment) {
      options._containers = [];
      var containment = options.containment;
      if(Object.isArray(containment)) {
        containment.each( function(c) { options._containers.push($(c)) });
      } else {
        options._containers.push($(containment));
      }
    }

    if(options.accept) options.accept = [options.accept].flatten();

    Element.makePositioned(element); // fix IE
    options.element = element;

    this.drops.push(options);
  },

  findDeepestChild: function(drops) {
    deepest = drops[0];

    for (i = 1; i < drops.length; ++i)
      if (Element.isParent(drops[i].element, deepest.element))
        deepest = drops[i];

    return deepest;
  },

  isContained: function(element, drop) {
    var containmentNode;
    if(drop.tree) {
      containmentNode = element.treeNode;
    } else {
      containmentNode = element.parentNode;
    }
    return drop._containers.detect(function(c) { return containmentNode == c });
  },

  isAffected: function(point, element, drop) {
    return (
      (drop.element!=element) &&
      ((!drop._containers) ||
        this.isContained(element, drop)) &&
      ((!drop.accept) ||
        (Element.classNames(element).detect(
          function(v) { return drop.accept.include(v) } ) )) &&
      Position.within(drop.element, point[0], point[1]) );
  },

  deactivate: function(drop) {
    if(drop.hoverclass)
      Element.removeClassName(drop.element, drop.hoverclass);
    this.last_active = null;
  },

  activate: function(drop) {
    if(drop.hoverclass)
      Element.addClassName(drop.element, drop.hoverclass);
    this.last_active = drop;
  },

  show: function(point, element) {
    if(!this.drops.length) return;
    var drop, affected = [];

    this.drops.each( function(drop) {
      if(Droppables.isAffected(point, element, drop))
        affected.push(drop);
    });

    if(affected.length>0)
      drop = Droppables.findDeepestChild(affected);

    if(this.last_active && this.last_active != drop) this.deactivate(this.last_active);
    if (drop) {
      Position.within(drop.element, point[0], point[1]);
      if(drop.onHover)
        drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));

      if (drop != this.last_active) Droppables.activate(drop);
    }
  },

  fire: function(event, element) {
    if(!this.last_active) return;
    Position.prepare();

    if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
      if (this.last_active.onDrop) {
        this.last_active.onDrop(element, this.last_active.element, event);
        return true;
      }
  },

  reset: function() {
    if(this.last_active)
      this.deactivate(this.last_active);
  }
};

var Draggables = {
  drags: [],
  observers: [],

  register: function(draggable) {
    if(this.drags.length == 0) {
      this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
      this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
      this.eventKeypress  = this.keyPress.bindAsEventListener(this);

      Event.observe(document, "mouseup", this.eventMouseUp);
      Event.observe(document, "mousemove", this.eventMouseMove);
      Event.observe(document, "keypress", this.eventKeypress);
    }
    this.drags.push(draggable);
  },

  unregister: function(draggable) {
    this.drags = this.drags.reject(function(d) { return d==draggable });
    if(this.drags.length == 0) {
      Event.stopObserving(document, "mouseup", this.eventMouseUp);
      Event.stopObserving(document, "mousemove", this.eventMouseMove);
      Event.stopObserving(document, "keypress", this.eventKeypress);
    }
  },

  activate: function(draggable) {
    if(draggable.options.delay) {
      this._timeout = setTimeout(function() {
        Draggables._timeout = null;
        window.focus();
        Draggables.activeDraggable = draggable;
      }.bind(this), draggable.options.delay);
    } else {
      window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
      this.activeDraggable = draggable;
    }
  },

  deactivate: function() {
    this.activeDraggable = null;
  },

  updateDrag: function(event) {
    if(!this.activeDraggable) return;
    var pointer = [Event.pointerX(event), Event.pointerY(event)];
    // Mozilla-based browsers fire successive mousemove events with
    // the same coordinates, prevent needless redrawing (moz bug?)
    if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
    this._lastPointer = pointer;

    this.activeDraggable.updateDrag(event, pointer);
  },

  endDrag: function(event) {
    if(this._timeout) {
      clearTimeout(this._timeout);
      this._timeout = null;
    }
    if(!this.activeDraggable) return;
    this._lastPointer = null;
    this.activeDraggable.endDrag(event);
    this.activeDraggable = null;
  },

  keyPress: function(event) {
    if(this.activeDraggable)
      this.activeDraggable.keyPress(event);
  },

  addObserver: function(observer) {
    this.observers.push(observer);
    this._cacheObserverCallbacks();
  },

  removeObserver: function(element) {  // element instead of observer fixes mem leaks
    this.observers = this.observers.reject( function(o) { return o.element==element });
    this._cacheObserverCallbacks();
  },

  notify: function(eventName, draggable, event) {  // 'onStart', 'onEnd', 'onDrag'
    if(this[eventName+'Count'] > 0)
      this.observers.each( function(o) {
        if(o[eventName]) o[eventName](eventName, draggable, event);
      });
    if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
  },

  _cacheObserverCallbacks: function() {
    ['onStart','onEnd','onDrag'].each( function(eventName) {
      Draggables[eventName+'Count'] = Draggables.observers.select(
        function(o) { return o[eventName]; }
      ).length;
    });
  }
};

/*--------------------------------------------------------------------------*/

var Draggable = Class.create({
  initialize: function(element) {
    var defaults = {
      handle: false,
      reverteffect: function(element, top_offset, left_offset) {
        var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
        new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
          queue: {scope:'_draggable', position:'end'}
        });
      },
      endeffect: function(element) {
        var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
        new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity,
          queue: {scope:'_draggable', position:'end'},
          afterFinish: function(){
            Draggable._dragging[element] = false
          }
        });
      },
      zindex: 1000,
      revert: false,
      quiet: false,
      scroll: false,
      scrollSensitivity: 20,
      scrollSpeed: 15,
      snap: false,  // false, or xy or [x,y] or function(x,y){ return [x,y] }
      delay: 0
    };

    if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))
      Object.extend(defaults, {
        starteffect: function(element) {
          element._opacity = Element.getOpacity(element);
          Draggable._dragging[element] = true;
          new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7});
        }
      });

    var options = Object.extend(defaults, arguments[1] || { });

    this.element = $(element);

    if(options.handle && Object.isString(options.handle))
      this.handle = this.element.down('.'+options.handle, 0);

    if(!this.handle) this.handle = $(options.handle);
    if(!this.handle) this.handle = this.element;

    if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
      options.scroll = $(options.scroll);
      this._isScrollChild = Element.childOf(this.element, options.scroll);
    }

    Element.makePositioned(this.element); // fix IE

    this.options  = options;
    this.dragging = false;

    this.eventMouseDown = this.initDrag.bindAsEventListener(this);
    Event.observe(this.handle, "mousedown", this.eventMouseDown);

    Draggables.register(this);
  },

  destroy: function() {
    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
    Draggables.unregister(this);
  },

  currentDelta: function() {
    return([
      parseInt(Element.getStyle(this.element,'left') || '0'),
      parseInt(Element.getStyle(this.element,'top') || '0')]);
  },

  initDrag: function(event) {
    if(!Object.isUndefined(Draggable._dragging[this.element]) &&
      Draggable._dragging[this.element]) return;
    if(Event.isLeftClick(event)) {
      // abort on form elements, fixes a Firefox issue
      var src = Event.element(event);
      if((tag_name = src.tagName.toUpperCase()) && (
        tag_name=='INPUT' ||
        tag_name=='SELECT' ||
        tag_name=='OPTION' ||
        tag_name=='BUTTON' ||
        tag_name=='TEXTAREA')) return;

      var pointer = [Event.pointerX(event), Event.pointerY(event)];
      var pos     = Position.cumulativeOffset(this.element);
      this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });

      Draggables.activate(this);
      Event.stop(event);
    }
  },

  startDrag: function(event) {
    this.dragging = true;
    if(!this.delta)
      this.delta = this.currentDelta();

    if(this.options.zindex) {
      this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
      this.element.style.zIndex = this.options.zindex;
    }

    if(this.options.ghosting) {
      this._clone = this.element.cloneNode(true);
      this._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
      if (!this._originallyAbsolute)
        Position.absolutize(this.element);
      this.element.parentNode.insertBefore(this._clone, this.element);
    }

    if(this.options.scroll) {
      if (this.options.scroll == window) {
        var where = this._getWindowScroll(this.options.scroll);
        this.originalScrollLeft = where.left;
        this.originalScrollTop = where.top;
      } else {
        this.originalScrollLeft = this.options.scroll.scrollLeft;
        this.originalScrollTop = this.options.scroll.scrollTop;
      }
    }

    Draggables.notify('onStart', this, event);

    if(this.options.starteffect) this.options.starteffect(this.element);
  },

  updateDrag: function(event, pointer) {
    if(!this.dragging) this.startDrag(event);

    if(!this.options.quiet){
      Position.prepare();
      Droppables.show(pointer, this.element);
    }

    Draggables.notify('onDrag', this, event);

    this.draw(pointer);
    if(this.options.change) this.options.change(this);

    if(this.options.scroll) {
      this.stopScrolling();

      var p;
      if (this.options.scroll == window) {
        with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
      } else {
        p = Position.page(this.options.scroll);
        p[0] += this.options.scroll.scrollLeft + Position.deltaX;
        p[1] += this.options.scroll.scrollTop + Position.deltaY;
        p.push(p[0]+this.options.scroll.offsetWidth);
        p.push(p[1]+this.options.scroll.offsetHeight);
      }
      var speed = [0,0];
      if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
      if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
      if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
      if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
      this.startScrolling(speed);
    }

    // fix AppleWebKit rendering
    if(Prototype.Browser.WebKit) window.scrollBy(0,0);

    Event.stop(event);
  },

  finishDrag: function(event, success) {
    this.dragging = false;

    if(this.options.quiet){
      Position.prepare();
      var pointer = [Event.pointerX(event), Event.pointerY(event)];
      Droppables.show(pointer, this.element);
    }

    if(this.options.ghosting) {
      if (!this._originallyAbsolute)
        Position.relativize(this.element);
      delete this._originallyAbsolute;
      Element.remove(this._clone);
      this._clone = null;
    }

    var dropped = false;
    if(success) {
      dropped = Droppables.fire(event, this.element);
      if (!dropped) dropped = false;
    }
    if(dropped && this.options.onDropped) this.options.onDropped(this.element);
    Draggables.notify('onEnd', this, event);

    var revert = this.options.revert;
    if(revert && Object.isFunction(revert)) revert = revert(this.element);

    var d = this.currentDelta();
    if(revert && this.options.reverteffect) {
      if (dropped == 0 || revert != 'failure')
        this.options.reverteffect(this.element,
          d[1]-this.delta[1], d[0]-this.delta[0]);
    } else {
      this.delta = d;
    }

    if(this.options.zindex)
      this.element.style.zIndex = this.originalZ;

    if(this.options.endeffect)
      this.options.endeffect(this.element);

    Draggables.deactivate(this);
    Droppables.reset();
  },

  keyPress: function(event) {
    if(event.keyCode!=Event.KEY_ESC) return;
    this.finishDrag(event, false);
    Event.stop(event);
  },

  endDrag: function(event) {
    if(!this.dragging) return;
    this.stopScrolling();
    this.finishDrag(event, true);
    Event.stop(event);
  },

  draw: function(point) {
    var pos = Position.cumulativeOffset(this.element);
    if(this.options.ghosting) {
      var r   = Position.realOffset(this.element);
      pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
    }

    var d = this.currentDelta();
    pos[0] -= d[0]; pos[1] -= d[1];

    if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
      pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
      pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
    }

    var p = [0,1].map(function(i){
      return (point[i]-pos[i]-this.offset[i])
    }.bind(this));

    if(this.options.snap) {
      if(Object.isFunction(this.options.snap)) {
        p = this.options.snap(p[0],p[1],this);
      } else {
      if(Object.isArray(this.options.snap)) {
        p = p.map( function(v, i) {
          return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this));
      } else {
        p = p.map( function(v) {
          return (v/this.options.snap).round()*this.options.snap }.bind(this));
      }
    }}

    var style = this.element.style;
    if((!this.options.constraint) || (this.options.constraint=='horizontal'))
      style.left = p[0] + "px";
    if((!this.options.constraint) || (this.options.constraint=='vertical'))
      style.top  = p[1] + "px";

    if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
  },

  stopScrolling: function() {
    if(this.scrollInterval) {
      clearInterval(this.scrollInterval);
      this.scrollInterval = null;
      Draggables._lastScrollPointer = null;
    }
  },

  startScrolling: function(speed) {
    if(!(speed[0] || speed[1])) return;
    this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
    this.lastScrolled = new Date();
    this.scrollInterval = setInterval(this.scroll.bind(this), 10);
  },

  scroll: function() {
    var current = new Date();
    var delta = current - this.lastScrolled;
    this.lastScrolled = current;
    if(this.options.scroll == window) {
      with (this._getWindowScroll(this.options.scroll)) {
        if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
          var d = delta / 1000;
          this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
        }
      }
    } else {
      this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
      this.options.scroll.scrollTop  += this.scrollSpeed[1] * delta / 1000;
    }

    Position.prepare();
    Droppables.show(Draggables._lastPointer, this.element);
    Draggables.notify('onDrag', this);
    if (this._isScrollChild) {
      Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
      Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
      Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
      if (Draggables._lastScrollPointer[0] < 0)
        Draggables._lastScrollPointer[0] = 0;
      if (Draggables._lastScrollPointer[1] < 0)
        Draggables._lastScrollPointer[1] = 0;
      this.draw(Draggables._lastScrollPointer);
    }

    if(this.options.change) this.options.change(this);
  },

  _getWindowScroll: function(w) {
    var T, L, W, H;
    with (w.document) {
      if (w.document.documentElement && documentElement.scrollTop) {
        T = documentElement.scrollTop;
        L = documentElement.scrollLeft;
      } else if (w.document.body) {
        T = body.scrollTop;
        L = body.scrollLeft;
      }
      if (w.innerWidth) {
        W = w.innerWidth;
        H = w.innerHeight;
      } else if (w.document.documentElement && documentElement.clientWidth) {
        W = documentElement.clientWidth;
        H = documentElement.clientHeight;
      } else {
        W = body.offsetWidth;
        H = body.offsetHeight;
      }
    }
    return { top: T, left: L, width: W, height: H };
  }
});

Draggable._dragging = { };

/*--------------------------------------------------------------------------*/

var SortableObserver = Class.create({
  initialize: function(element, observer) {
    this.element   = $(element);
    this.observer  = observer;
    this.lastValue = Sortable.serialize(this.element);
  },

  onStart: function() {
    this.lastValue = Sortable.serialize(this.element);
  },

  onEnd: function() {
    Sortable.unmark();
    if(this.lastValue != Sortable.serialize(this.element))
      this.observer(this.element)
  }
});

var Sortable = {
  SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,

  sortables: { },

  _findRootElement: function(element) {
    while (element.tagName.toUpperCase() != "BODY") {
      if(element.id && Sortable.sortables[element.id]) return element;
      element = element.parentNode;
    }
  },

  options: function(element) {
    element = Sortable._findRootElement($(element));
    if(!element) return;
    return Sortable.sortables[element.id];
  },

  destroy: function(element){
    element = $(element);
    var s = Sortable.sortables[element.id];

    if(s) {
      Draggables.removeObserver(s.element);
      s.droppables.each(function(d){ Droppables.remove(d) });
      s.draggables.invoke('destroy');

      delete Sortable.sortables[s.element.id];
    }
  },

  create: function(element) {
    element = $(element);
    var options = Object.extend({
      element:     element,
      tag:         'li',       // assumes li children, override with tag: 'tagname'
      dropOnEmpty: false,
      tree:        false,
      treeTag:     'ul',
      overlap:     'vertical', // one of 'vertical', 'horizontal'
      constraint:  'vertical', // one of 'vertical', 'horizontal', false
      containment: element,    // also takes array of elements (or id's); or false
      handle:      false,      // or a CSS class
      only:        false,
      delay:       0,
      hoverclass:  null,
      ghosting:    false,
      quiet:       false,
      scroll:      false,
      scrollSensitivity: 20,
      scrollSpeed: 15,
      format:      this.SERIALIZE_RULE,

      // these take arrays of elements or ids and can be
      // used for better initialization performance
      elements:    false,
      handles:     false,

      onChange:    Prototype.emptyFunction,
      onUpdate:    Prototype.emptyFunction
    }, arguments[1] || { });

    // clear any old sortable with same element
    this.destroy(element);

    // build options for the draggables
    var options_for_draggable = {
      revert:      true,
      quiet:       options.quiet,
      scroll:      options.scroll,
      scrollSpeed: options.scrollSpeed,
      scrollSensitivity: options.scrollSensitivity,
      delay:       options.delay,
      ghosting:    options.ghosting,
      constraint:  options.constraint,
      handle:      options.handle };

    if(options.starteffect)
      options_for_draggable.starteffect = options.starteffect;

    if(options.reverteffect)
      options_for_draggable.reverteffect = options.reverteffect;
    else
      if(options.ghosting) options_for_draggable.reverteffect = function(element) {
        element.style.top  = 0;
        element.style.left = 0;
      };

    if(options.endeffect)
      options_for_draggable.endeffect = options.endeffect;

    if(options.zindex)
      options_for_draggable.zindex = options.zindex;

    // build options for the droppables
    var options_for_droppable = {
      overlap:     options.overlap,
      containment: options.containment,
      tree:        options.tree,
      hoverclass:  options.hoverclass,
      onHover:     Sortable.onHover
    };

    var options_for_tree = {
      onHover:      Sortable.onEmptyHover,
      overlap:      options.overlap,
      containment:  options.containment,
      hoverclass:   options.hoverclass
    };

    // fix for gecko engine
    Element.cleanWhitespace(element);

    options.draggables = [];
    options.droppables = [];

    // drop on empty handling
    if(options.dropOnEmpty || options.tree) {
      Droppables.add(element, options_for_tree);
      options.droppables.push(element);
    }

    (options.elements || this.findElements(element, options) || []).each( function(e,i) {
      var handle = options.handles ? $(options.handles[i]) :
        (options.handle ? $(e).select('.' + options.handle)[0] : e);
      options.draggables.push(
        new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
      Droppables.add(e, options_for_droppable);
      if(options.tree) e.treeNode = element;
      options.droppables.push(e);
    });

    if(options.tree) {
      (Sortable.findTreeElements(element, options) || []).each( function(e) {
        Droppables.add(e, options_for_tree);
        e.treeNode = element;
        options.droppables.push(e);
      });
    }

    // keep reference
    this.sortables[element.id] = options;

    // for onupdate
    Draggables.addObserver(new SortableObserver(element, options.onUpdate));

  },

  // return all suitable-for-sortable elements in a guaranteed order
  findElements: function(element, options) {
    return Element.findChildren(
      element, options.only, options.tree ? true : false, options.tag);
  },

  findTreeElements: function(element, options) {
    return Element.findChildren(
      element, options.only, options.tree ? true : false, options.treeTag);
  },

  onHover: function(element, dropon, overlap) {
    if(Element.isParent(dropon, element)) return;

    if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
      return;
    } else if(overlap>0.5) {
      Sortable.mark(dropon, 'before');
      if(dropon.previousSibling != element) {
        var oldParentNode = element.parentNode;
        element.style.visibility = "hidden"; // fix gecko rendering
        dropon.parentNode.insertBefore(element, dropon);
        if(dropon.parentNode!=oldParentNode)
          Sortable.options(oldParentNode).onChange(element);
        Sortable.options(dropon.parentNode).onChange(element);
      }
    } else {
      Sortable.mark(dropon, 'after');
      var nextElement = dropon.nextSibling || null;
      if(nextElement != element) {
        var oldParentNode = element.parentNode;
        element.style.visibility = "hidden"; // fix gecko rendering
        dropon.parentNode.insertBefore(element, nextElement);
        if(dropon.parentNode!=oldParentNode)
          Sortable.options(oldParentNode).onChange(element);
        Sortable.options(dropon.parentNode).onChange(element);
      }
    }
  },

  onEmptyHover: function(element, dropon, overlap) {
    var oldParentNode = element.parentNode;
    var droponOptions = Sortable.options(dropon);

    if(!Element.isParent(dropon, element)) {
      var index;

      var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});
      var child = null;

      if(children) {
        var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);

        for (index = 0; index < children.length; index += 1) {
          if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
            offset -= Element.offsetSize (children[index], droponOptions.overlap);
          } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
            child = index + 1 < children.length ? children[index + 1] : null;
            break;
          } else {
            child = children[index];
            break;
          }
        }
      }

      dropon.insertBefore(element, child);

      Sortable.options(oldParentNode).onChange(element);
      droponOptions.onChange(element);
    }
  },

  unmark: function() {
    if(Sortable._marker) Sortable._marker.hide();
  },

  mark: function(dropon, position) {
    // mark on ghosting only
    var sortable = Sortable.options(dropon.parentNode);
    if(sortable && !sortable.ghosting) return;

    if(!Sortable._marker) {
      Sortable._marker =
        ($('dropmarker') || Element.extend(document.createElement('DIV'))).
          hide().addClassName('dropmarker').setStyle({position:'absolute'});
      document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
    }
    var offsets = Position.cumulativeOffset(dropon);
    Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});

    if(position=='after')
      if(sortable.overlap == 'horizontal')
        Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
      else
        Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});

    Sortable._marker.show();
  },

  _tree: function(element, options, parent) {
    var children = Sortable.findElements(element, options) || [];

    for (var i = 0; i < children.length; ++i) {
      var match = children[i].id.match(options.format);

      if (!match) continue;

      var child = {
        id: encodeURIComponent(match ? match[1] : null),
        element: element,
        parent: parent,
        children: [],
        position: parent.children.length,
        container: $(children[i]).down(options.treeTag)
      };

      /* Get the element containing the children and recurse over it */
      if (child.container)
        this._tree(child.container, options, child);

      parent.children.push (child);
    }

    return parent;
  },

  tree: function(element) {
    element = $(element);
    var sortableOptions = this.options(element);
    var options = Object.extend({
      tag: sortableOptions.tag,
      treeTag: sortableOptions.treeTag,
      only: sortableOptions.only,
      name: element.id,
      format: sortableOptions.format
    }, arguments[1] || { });

    var root = {
      id: null,
      parent: null,
      children: [],
      container: element,
      position: 0
    };

    return Sortable._tree(element, options, root);
  },

  /* Construct a [i] index for a particular node */
  _constructIndex: function(node) {
    var index = '';
    do {
      if (node.id) index = '[' + node.position + ']' + index;
    } while ((node = node.parent) != null);
    return index;
  },

  sequence: function(element) {
    element = $(element);
    var options = Object.extend(this.options(element), arguments[1] || { });

    return $(this.findElements(element, options) || []).map( function(item) {
      return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
    });
  },

  setSequence: function(element, new_sequence) {
    element = $(element);
    var options = Object.extend(this.options(element), arguments[2] || { });

    var nodeMap = { };
    this.findElements(element, options).each( function(n) {
        if (n.id.match(options.format))
            nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
        n.parentNode.removeChild(n);
    });

    new_sequence.each(function(ident) {
      var n = nodeMap[ident];
      if (n) {
        n[1].appendChild(n[0]);
        delete nodeMap[ident];
      }
    });
  },

  serialize: function(element) {
    element = $(element);
    var options = Object.extend(Sortable.options(element), arguments[1] || { });
    var name = encodeURIComponent(
      (arguments[1] && arguments[1].name) ? arguments[1].name : element.id);

    if (options.tree) {
      return Sortable.tree(element, arguments[1]).children.map( function (item) {
        return [name + Sortable._constructIndex(item) + "[id]=" +
                encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
      }).flatten().join('&');
    } else {
      return Sortable.sequence(element, arguments[1]).map( function(item) {
        return name + "[]=" + encodeURIComponent(item);
      }).join('&');
    }
  }
};

// Returns true if child is contained within element
Element.isParent = function(child, element) {
  if (!child.parentNode || child == element) return false;
  if (child.parentNode == element) return true;
  return Element.isParent(child.parentNode, element);
};

Element.findChildren = function(element, only, recursive, tagName) {
  if(!element.hasChildNodes()) return null;
  tagName = tagName.toUpperCase();
  if(only) only = [only].flatten();
  var elements = [];
  $A(element.childNodes).each( function(e) {
    if(e.tagName && e.tagName.toUpperCase()==tagName &&
      (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
        elements.push(e);
    if(recursive) {
      var grandchildren = Element.findChildren(e, only, recursive, tagName);
      if(grandchildren) elements.push(grandchildren);
    }
  });

  return (elements.length>0 ? elements.flatten() : []);
};

Element.offsetSize = function (element, type) {
  return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];
};
// Copyright (c) 2005 Marty Haught, Thomas Fuchs 
//
// See http://script.aculo.us for more info
// 
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

if(!Control) var Control = {};
Control.Slider = Class.create();

// options:
//  axis: 'vertical', or 'horizontal' (default)
//
// callbacks:
//  onChange(value)
//  onSlide(value)
Control.Slider.prototype = {
  initialize: function(handle, track, options) {
    var slider = this;
    
    if(handle instanceof Array) {
      this.handles = handle.collect( function(e) { return $(e) });
    } else {
      this.handles = [$(handle)];
    }
    
    this.track   = $(track);
    this.options = options || {};

    this.axis      = this.options.axis || 'horizontal';
    this.increment = this.options.increment || 1;
    this.step      = parseInt(this.options.step || '1');
    this.range     = this.options.range || $R(0,1);
    
    this.value     = 0; // assure backwards compat
    this.values    = this.handles.map( function() { return 0 });
    this.spans     = this.options.spans ? this.options.spans.map(function(s){ return $(s) }) : false;
    this.options.startSpan = $(this.options.startSpan || null);
    this.options.endSpan   = $(this.options.endSpan || null);

    this.restricted = this.options.restricted || false;

    this.maximum   = this.options.maximum || this.range.end;
    this.minimum   = this.options.minimum || this.range.start;

    // Will be used to align the handle onto the track, if necessary
    this.alignX = parseInt(this.options.alignX || '0');
    this.alignY = parseInt(this.options.alignY || '0');
    
    this.trackLength = this.maximumOffset() - this.minimumOffset();
    this.handleLength = this.isVertical() ? this.handles[0].offsetHeight : this.handles[0].offsetWidth;

    this.active   = false;
    this.dragging = false;
    this.disabled = false;

    if(this.options.disabled) this.setDisabled();

    // Allowed values array
    this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
    if(this.allowedValues) {
      this.minimum = this.allowedValues.min();
      this.maximum = this.allowedValues.max();
    }

    this.eventMouseDown = this.startDrag.bindAsEventListener(this);
    this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
    this.eventMouseMove = this.update.bindAsEventListener(this);

    // Initialize handles in reverse (make sure first handle is active)
    this.handles.each( function(h,i) {
      i = slider.handles.length-1-i;
      slider.setValue(parseFloat(
        (slider.options.sliderValue instanceof Array ? 
          slider.options.sliderValue[i] : slider.options.sliderValue) || 
         slider.range.start), i);
      Element.makePositioned(h); // fix IE
      Event.observe(h, "mousedown", slider.eventMouseDown);
    });
    
    Event.observe(this.track, "mousedown", this.eventMouseDown);
    Event.observe(document, "mouseup", this.eventMouseUp);
    Event.observe(document, "mousemove", this.eventMouseMove);
    
    this.initialized = true;
  },
  dispose: function() {
    var slider = this;    
    Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
    Event.stopObserving(document, "mouseup", this.eventMouseUp);
    Event.stopObserving(document, "mousemove", this.eventMouseMove);
    this.handles.each( function(h) {
      Event.stopObserving(h, "mousedown", slider.eventMouseDown);
    });
  },
  setDisabled: function(){
    this.disabled = true;
  },
  setEnabled: function(){
    this.disabled = false;
  },  
  getNearestValue: function(value){
    if(this.allowedValues){
      if(value >= this.allowedValues.max()) return(this.allowedValues.max());
      if(value <= this.allowedValues.min()) return(this.allowedValues.min());
      
      var offset = Math.abs(this.allowedValues[0] - value);
      var newValue = this.allowedValues[0];
      this.allowedValues.each( function(v) {
        var currentOffset = Math.abs(v - value);
        if(currentOffset <= offset){
          newValue = v;
          offset = currentOffset;
        } 
      });
      return newValue;
    }
    if(value > this.range.end) return this.range.end;
    if(value < this.range.start) return this.range.start;
    return value;
  },
  setValue: function(sliderValue, handleIdx){
    if(!this.active) {
      this.activeHandle    = this.handles[handleIdx];
      this.activeHandleIdx = handleIdx;
      this.updateStyles();
    }
    handleIdx = handleIdx || this.activeHandleIdx || 0;
    if(this.initialized && this.restricted) {
      if((handleIdx>0) && (sliderValue<this.values[handleIdx-1]))
        sliderValue = this.values[handleIdx-1];
      if((handleIdx < (this.handles.length-1)) && (sliderValue>this.values[handleIdx+1]))
        sliderValue = this.values[handleIdx+1];
    }
    sliderValue = this.getNearestValue(sliderValue);
    this.values[handleIdx] = sliderValue;
    this.value = this.values[0]; // assure backwards compat
    
    this.handles[handleIdx].style[this.isVertical() ? 'top' : 'left'] = 
      this.translateToPx(sliderValue, handleIdx);
    
    this.drawSpans();
    if(!this.dragging || !this.event) this.updateFinished();
  },
  setValueBy: function(delta, handleIdx) {
    this.setValue(this.values[handleIdx || this.activeHandleIdx || 0] + delta, 
      handleIdx || this.activeHandleIdx || 0);
  },
  translateToPx: function(value, handleIdx) {
    // Hack GR to allow two sliders show the same value without overlapping
    if (this.handles.length == 2 && handleIdx != null) {
      var offset = (value - this.range.start) / (this.range.end-this.range.start) * (this.trackLength - 2 * this.handleLength);
	  if (handleIdx > 0) {
	    return Math.round(offset + this.handleLength) + 'px';
	  }
	  else {
	    return Math.round(offset) + 'px';
	  }
	}
    else {
      return Math.round(
      ((this.trackLength-this.handleLength)/(this.range.end-this.range.start)) * 
      (value - this.range.start)) + "px";
    }
  },
  translateToValue: function(offset) {
    // Hack GR to allow two sliders show the same value without overlapping
    var percent = 0;
    if (this.handles.length == 2) {
	  if (this.activeHandleIdx > 0) {
	  	percent = (offset - 1.5 * this.handleLength)/(this.trackLength - 2 * this.handleLength)
	  }
	  else {
    	percent = (offset + 0.5 * this.handleLength)/(this.trackLength - 2 * this.handleLength)
	  }
	  var value = percent * (this.range.end-this.range.start) + this.range.start; 
	  if (value < this.range.start) {
	    value = this.range.start;
	  }
	  else if (value > this.range.end) {
	    value = this.range.end;
	  }
	  return value;
	}
    else {
      return ((offset/(this.trackLength-this.handleLength) * 
        (this.range.end-this.range.start)) + this.range.start);
    }
  },
  getRange: function(range) {
    var v = this.values.sortBy(Prototype.K); 
    range = range || 0;
    return $R(v[range],v[range+1]);
  },
  minimumOffset: function(){
    return(this.isVertical() ? this.alignY : this.alignX);
  },
  maximumOffset: function(){
    return(this.isVertical() ?
      this.track.offsetHeight - this.alignY : this.track.offsetWidth - this.alignX);
  },  
  isVertical:  function(){
    return (this.axis == 'vertical');
  },
  drawSpans: function() {
    var slider = this;
    if(this.spans)
      $R(0, this.spans.length-1).each(function(r) { slider.setSpan(slider.spans[r], slider.getRange(r)) });
    if(this.options.startSpan)
      this.setSpan(this.options.startSpan,
        $R(0, this.values.length>1 ? this.getRange(0).min() : this.value ));
    if(this.options.endSpan)
      this.setSpan(this.options.endSpan, 
        $R(this.values.length>1 ? this.getRange(this.spans.length-1).max() : this.value, this.maximum));
  },
  setSpan: function(span, range) {
    if(this.isVertical()) {
      span.style.top = this.translateToPx(range.start, null);
      span.style.height = this.translateToPx(range.end - range.start + this.range.start, null);
    } else {
      span.style.left = this.translateToPx(range.start, null);
      span.style.width = this.translateToPx(range.end - range.start + this.range.start, null);
    }
  },
  updateStyles: function() {
    this.handles.each( function(h){ Element.removeClassName(h, 'selected') });
    Element.addClassName(this.activeHandle, 'selected');
  },
  startDrag: function(event) {
    if(Event.isLeftClick(event)) {
      if(!this.disabled){
        this.active = true;
        
        var handle = Event.element(event);
        var pointer  = [Event.pointerX(event), Event.pointerY(event)];
        if(handle==this.track) {
          var offsets  = Position.cumulativeOffset(this.track); 
          this.event = event;
          this.setValue(this.translateToValue( 
           (this.isVertical() ? pointer[1]-offsets[1] : pointer[0]-offsets[0])-(this.handleLength/2)
          ));
          var offsets  = Position.cumulativeOffset(this.activeHandle);
          this.offsetX = (pointer[0] - offsets[0]);
          this.offsetY = (pointer[1] - offsets[1]);
        } else {
          // find the handle (prevents issues with Safari)
          while((this.handles.indexOf(handle) == -1) && handle.parentNode) 
            handle = handle.parentNode;
        
          this.activeHandle    = handle;
          this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
          this.updateStyles();
        
          var offsets  = Position.cumulativeOffset(this.activeHandle);
          this.offsetX = (pointer[0] - offsets[0]);
          this.offsetY = (pointer[1] - offsets[1]);
        }
      }
      Event.stop(event);
    }
  },
  update: function(event) {
   if(this.active) {
      if(!this.dragging) this.dragging = true;
      this.draw(event);
      // fix AppleWebKit rendering
      if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
      Event.stop(event);
   }
  },
  draw: function(event) {
    var pointer = [Event.pointerX(event), Event.pointerY(event)];
    var offsets = Position.cumulativeOffset(this.track);
    pointer[0] -= this.offsetX + offsets[0];
    pointer[1] -= this.offsetY + offsets[1];
    this.event = event;
    this.setValue(this.translateToValue( this.isVertical() ? pointer[1] : pointer[0] ));
    if(this.initialized && this.options.onSlide)
      this.options.onSlide(this.values.length>1 ? this.values : this.value, this);
  },
  endDrag: function(event) {
    if(this.active && this.dragging) {
      this.finishDrag(event, true);
      Event.stop(event);
    }
    this.active = false;
    this.dragging = false;
  },  
  finishDrag: function(event, success) {
    this.active = false;
    this.dragging = false;
    this.updateFinished();
  },
  updateFinished: function() {
    if(this.initialized && this.options.onChange) 
      this.options.onChange(this.values.length>1 ? this.values : this.value, this);
    this.event = null;
  }
}
function addScript(src, objectToCheck) {
	if (objectToCheck != null && typeof(window[objectToCheck]) == 'object') {
		return;
	}
    document.write('<script type="text/javascript" ');
    document.write('src="' + src + '">');
    document.write('</script>');
}

function addScriptDynamic(src) {
    var headNode = document.getElementsByTagName("head")[0];
    var scriptNode = document.createElement("script");
    scriptNode.setAttribute('type', 'text/javascript');
    scriptNode.setAttribute('src', src);
    headNode.appendChild(scriptNode);
}

function addCss(src, markerOptions) {
	var headNode  = document.getElementsByTagName("head")[0];
	if (markerOptions) {
		// check to see if the css has been loaded already
		var testNode = document.createElement(markerOptions['nodeType']);
		testNode.style.display = 'none';
		testNode.className = markerOptions['className'];
		headNode.appendChild(testNode);
		var styleVal = getRuntimeStyle(testNode, markerOptions['property']);
		if (styleVal == markerOptions['value']) {
			headNode.removeChild(testNode);
			return;
		}
		headNode.removeChild(testNode);
	}
    var cssNode   = document.createElement('link');
    cssNode.type  = 'text/css';
    cssNode.rel   = 'stylesheet';
    cssNode.href  = src;
    cssNode.media = 'screen';
    headNode.appendChild(cssNode);
}

/**
 * Get the runtime style attribute of an element (includes both external and inline styles)
 */
function getRuntimeStyle(oElm, strCssRule) {
	var strValue = "";
	if(window.getComputedStyle){
		strValue = window.getComputedStyle(oElm, "")[strCssRule];
	}
	else if(oElm.currentStyle){
		strCssRule = strCssRule.replace(/\-(\w)/g, function (strMatch, p1){
			return p1.toUpperCase();
		});
		strValue = oElm.currentStyle[strCssRule];
	}
	return strValue;
}


(function(){
    var cache = {};
   
    this.tmpl = function tmpl(str, data){
      // Figure out if we're getting a template, or if we need to
      // load the template - and be sure to cache the result.
        
        str = document.getElementById(str).value;
      //var fn = !/\W/.test(str) ?
        //cache[str] = cache[str] ||
       //   tmpl(document.getElementById(str).value) :
       
        // Generate a reusable function that will serve as a template
        // generator (and which will be cached).
        var functionBody = "var p=[],print=function(){p.push.apply(p,arguments);};" +
        
        // Introduce the data as local variables using with(){}
        "with(obj){p.push('" +
       
        // Convert the template into pure JavaScript
        str
          .replace(/[\r\t\n]/g, " ")
          .split("<%").join("\t")
          .replace(/((^|%>)[^\t]*)'/g, "$1\r")
          .replace(/\t=(.*?)%>/g, "',$1,'")
          .split("\t").join("');")
          .split("%>").join("p.push('")
          .split("\r").join("\\'")
      + "');}return p.join('');";
        //console.log(functionBody);
        var fn = new Function("obj",functionBody);
  // );
     
      // Provide some basic currying to the user
      return data ? fn( data ) : fn;
    };
})();
        
function waitForBody(callback) {
    waitForCond(function() { return document.body != undefined && document.body != null && $('_map_container') != null; }, WAIT_FOR_BODY_INTERVAL, callback);
}
        
function waitFor(elementId, checkInterval, callback) {
    waitForCond(function() { return document.getElementById(elementId); }, checkInterval, callback);
}

function waitForAll(elementIds, checkInterval, callback) {
    waitForCond(function() {
        var conditionMet = true;
        var elements     = [];
        for (var i = 0; i < elementIds.length; i++) {
            var element  = document.getElementById(elementIds[i]);
            conditionMet = conditionMet && (element != null)
            elements.push(element);
        }
        return conditionMet ? elements : false;
    }, checkInterval, callback);
}
        
function waitForCond(cond, checkInterval, callback) {
    var x = cond();
    if (x) {
        callback(x);
    } else {
        window.setTimeout(function() { waitForCond(cond, checkInterval, callback); }, checkInterval);
    }
}


/** if required, create a faux console for IE */
(function() {
    var _CONSOLE_DEBUG = 0;
    if (!window.console) {
        if (_CONSOLE_DEBUG) {
            var consoleDiv = document.createElement("textarea");
            var button     = document.createElement("button");
            button.innerHTML = "Clear Console";
            consoleDiv.className = "fauxConsole";
            consoleDiv.readOnly  = true;
            button.onclick = function(e) {
                consoleDiv.value = "";
            }
            waitForBody(function() {
                document.body.appendChild(consoleDiv);
                document.body.appendChild(button);
            });
            window.console = {log: function(t) { consoleDiv.value += (t + '\n'); } };
        } else {
            window.console = {log: function(t) { }}; /* at least avoid a javascript error */
        }
    }
})();

function StopWatch() {
    this.LOG_TIMES = false;
    this.go();
}

StopWatch.prototype.go = function() {
    this.start = new Date();
    this.lastCheckPoint = this.start;
}

StopWatch.prototype.checkpoint = function(msg) {
    var now = new Date();
    var elapsedSinceCheck = (now - this.lastCheckPoint) / 1000;
    var elapsedSinceStart = (now - this.start) / 1000;
    this.lastCheckPoint   = now;
    
    if (this.LOG_TIMES) {
        console.log(msg + " " + elapsedSinceCheck + "s since last checkpoint, " + elapsedSinceStart + "s since start");
    }
}

function EventThrottle(checkpoints) {
    this.checkpoints = checkpoints;
    this.count = checkpoints;
}

EventThrottle.prototype.start = function() {
    this.count = 0;
}

EventThrottle.prototype.checkpoint = function() {
    this.count++;
}

EventThrottle.prototype.isFinished = function() {
    return this.count >= this.checkpoints;
}

function _array_split_items_per_group(arr, numGroups) {
    var numItems = arr.length;
    if (numItems % numGroups == 0) {
        return numItems / numGroups;
    }
    return Math.ceil(numItems / numGroups);
}

function array_partition(arr, itemsPerGroup) {
    var currItem = 0;
    var groups = [];
    var currGroup = [];
    for (var i = 0; i < arr.length; i++) {
        currGroup.push(arr[i]);
        currItem++;
        if (currItem == itemsPerGroup) {
            groups.push(currGroup);
            currGroup = [];
            currItem = 0;
        }
    }
    if (currGroup.length > 0) {
        groups.push(currGroup);
    }
    return groups;
}

function array_split(arr, numGroups) {
    var itemsPerGroup = _array_split_items_per_group(arr, numGroups);
    return array_partition(arr, itemsPerGroup);
}

_data_response_queue = {};

_data_response_queue_process = function(serviceName, data) {
    var callback = _data_response_queue[serviceName];
    if (callback) {
        callback(data);
    }
}

_data_response_queue_add = function(serviceName, callback) {
    _data_response_queue[serviceName] = callback;
}

function ajax(options) {
    _data_response_queue_add(options.serviceName, options.callback);
    addScriptDynamic(options.url);
}

function ajax_xhr(options) {
	new Ajax.Request(options.url, {
		  method: 'POST',
		  parameters: options.params,
		  onSuccess: function(transport) {
			options.callback(transport.responseText);
		  }
    });
}

function fillDestination(targetSelectId, options) {
    ajax({
        serviceName: options.serviceName,
        url: 'http://www.asiawebdirect.com/chang/maps.php/json/' + options.serviceName + '?serviceName=' + options.serviceName + '&id=' + options.id,
        callback: function(data) {
            var locations = data.evalJSON();
            var dList = $(targetSelectId);
            dList.options.length = 0;
            if (options['all']) {
                dList.options[0] = new Option(options.allLabel, '');
            }
            for (var i = 0; i < locations.length; i++) {
                var option = new Option(options.nameFunc(locations[i]), options.valueFunc(locations[i]));
                option.setAttribute('path', locations[i].path);
                option.setAttribute('idPath', locations[i].id_path);
                option.setAttribute('id', locations[i].id);
                dList.options[dList.options.length] = option;
            }
            dList.onclick = function() { options.clickFunc(dList); }
            if (options['afterCreate']) {
                options.afterCreate(dList);
            }
        }
    });
}

function setupDestinationLists(selectedDestIdPath, selectedDestPath, selectIds) {
    if (!selectIds) {
        selectIds = {
            'countrySelect' : 'countrySelect',
            'regionSelect'  : 'regionSelect',
            'areaSelect'    : 'areaSelect'
        };
    }
    var idPath    = selectedDestIdPath.substr(1, selectedDestIdPath.length - 2).split('/');
    var path      = selectedDestPath.substr(1, selectedDestPath.length - 2).split('/');
    var destLevel = idPath.length;
    var autoSelectedCountry = false;
    var autoSelectedRegion  = false;
    var autoSelectedArea    = false;

    fillDestination(selectIds.countrySelect, {
        'serviceName' : 'loadCountries',
        'id'          : '',
        'afterCreate' : function(countrySelect) {
            if (destLevel >= 2 && !autoSelectedCountry) {
                setSelectValue(countrySelect, {'name' : path[1]});
                autoSelectedCountry = true;
            }
        },
        'nameFunc'    : dstName,
        'valueFunc'   : dstId,
        'clickFunc'   : function(countrySelect) {
            clearList(selectIds.regionSelect);
            clearList(selectIds.areaSelect);
            fillDestination(selectIds.regionSelect, {
                'serviceName' : 'loadRegions',
                'id'          : countrySelect.options[countrySelect.selectedIndex].getAttribute('id'),
                'all'         : true,
                'allLabel'    : 'All Regions',
                'afterCreate' : function(regionSelect) {
                    if (destLevel >= 3 && !autoSelectedRegion) {
                        setSelectValue(regionSelect, {'name' : path[2]});
                        autoSelectedRegion = true;
                    }
                },
                'nameFunc'    : dstName,
                'valueFunc'   : dstId,
                'clickFunc'   : function(regionSelect) {
                    clearList(selectIds.areaSelect);
                    if (!regionSelect.value) return;
                    fillDestination(selectIds.areaSelect, {
                        'serviceName' : 'loadAreas',
                        'id'          : regionSelect.options[regionSelect.selectedIndex].getAttribute('id'),
                        'all'         : true,
                        'allLabel'    : 'All Areas',
                        'afterCreate' : function(areaSelect) {
                            if (destLevel >= 4 && !autoSelectedArea) {
                                setSelectValue(areaSelect, {'name' : path[3]});
                                autoSelectedArea = true;
                            }
                        },
                        'nameFunc'    : dstName,
                        'valueFunc'   : dstId,
                        'clickFunc'   : function(areaSelect) {
                            // do nothing
                        }
                    });
                }
            });
        }
    });
}

function dstName(dst) {
    return dst.name;
}

function dstId(dst) {
    return dst.id;
}

function clearList(id) {
    $(id).options.length = 0;
}

function dstPath(dst) {
    return dst.path;
}

/*
 * Target is an Object:
 * target.name -- the target name (used first if specified)
 * target.value -- the target value
 */
function setSelectValue(select, target) {
    for (var i = 0; i < select.options.length; i++) {
        var option = select.options[i];
        if (target['name'] && target['name'] == option.text) {
            select.selectedIndex = i;
            select.onclick();
            return;
        } else if (target['value'] && target['value'] == option.value) {
            select.selectedIndex = i;
            select.onclick();
            return;
        }
    }
}

function getSelectedDestinationId() {
    var selectedIndex = $('areaSelect').selectedIndex;
    if (selectedIndex != -1 && $('areaSelect').options[selectedIndex].value != "") return $('areaSelect').options[selectedIndex].value;
    
    selectedIndex = $('regionSelect').selectedIndex;
    if (selectedIndex != -1 && $('regionSelect').options[selectedIndex].value != "") return $('regionSelect').options[selectedIndex].value;

    return $('countrySelect').options[$('countrySelect').selectedIndex].value;
}

function fromPath(path) {
    return path.replace(/\//g, ',')
}

function processListAsync(list, batchSize, processor, callback, index) {
	if (!index) {
		index = 0;
	}
	var count = 0;
	while (index < list.length && count < batchSize) {
		processor(list[index], list, index);
		count++;
		index++;
	}
	if (index == list.length) { // finished
		callback();
	} else {
		window.setTimeout(function() {
			processListAsync(list, batchSize, processor, callback, index);
		}, 0.05);
	}
}  
addScript('http://www.asiawebdirect.com/js/prototype.js',     'Prototype');
addScript('http://www.asiawebdirect.com/js/scriptaculous.js', 'Scriptaculous');
addScript('http://www.asiawebdirect.com/js/effects.js',       'Effect');
addScript('http://www.asiawebdirect.com/js/dragdrop.js',      'Droppables');
addCss('http://www.asiawebdirect.com/css/maps.css', {nodeType: 'div', className: '_marker_class', property: 'zIndex', value: '999'});

DEFAULT_INTERVAL               = 500;
WAIT_FOR_BODY_INTERVAL         = DEFAULT_INTERVAL;
WAIT_FOR_TEMPLATE_INTERVAL     = DEFAULT_INTERVAL;
WAIT_FOR_CLUSTER_LIST          = DEFAULT_INTERVAL;
WAIT_FOR_FACILITY_LIST         = DEFAULT_INTERVAL;
WAIT_FOR_THUMBNAIL_INTERVAL    = DEFAULT_INTERVAL;
WAIT_FOR_IMAGE_BUTTON_INTERVAL = DEFAULT_INTERVAL;
WAIT_FOR_REVIEW_INTERVAL       = DEFAULT_INTERVAL;
WAIT_FOR_REVIEW_PAGE_INTERVAL  = DEFAULT_INTERVAL;

STOP_WATCH               = new StopWatch();
STOP_WATCH.LOG_TIMES     = false;
ZOOM                     = 12;
CLUSTER_RADIUS           = 40;

MARKER_TYPE_SINGLE       = 1;
MARKER_TYPE_CLUSTER      = 2;
MARKER_TYPE_LANDMARK     = 3;
MARKER_TYPE_LANDMARK_NEW = 4;
MARKER_TYPE_LABEL        = 5;

LOCATION_TYPE_HOTEL      = 1;
LOCATION_TYPE_LANDMARK   = 2;
LOCATION_TYPE_LABEL      = 3;

VERBOSITY_MAXIMUM = 100;
VERBOSITY_MEDIUM  = 50;
VERBOSITY_MINIMUM = 1;

/* -------------------------------------------------------------------------------------------- */

function HotelMap(container, options) {
    this.container = document.createElement("div");
    this.container.style.width  = container.style.width;
    this.container.style.height = container.style.height;
    this.container.style.position = 'relative';
    container.appendChild(this.container);
    this.options    = options;
    this.zoomTarget = null;
    this.locations  = [];
    this.highlightedLocations = null;
    this.origLocations = null;
    this.labels     = [];
    this.allMarkers = [];
    this.visibleMarkers = [];
    this.showLandmarkControl = null;
    this.clusterRadius = CLUSTER_RADIUS;
    this._refreshing = false;
    this._refreshQueued = false;
    this._refreshCbQueue = [];
    // need to fetch templates
    ajax({
        serviceName: 'mapTemplates',
        url: 'http://www.asiawebdirect.com/chang/maps.php/json/templates?serviceName=mapTemplates',
        callback: function(data) {
            var json = data.evalJSON();
            var div  = document.createElement("div");
            div.innerHTML = json.html;
            document.body.appendChild(div);
            waitFor("_map_template_container", WAIT_FOR_TEMPLATE_INTERVAL, function() { this.initialize(); }.bind(this));            
        }.bind(this)
    });
    
    if (!this.options['verbosity']) {
        this.options.verbosity = VERBOSITY_MAXIMUM;
    }
    if (this.options.verbosity <= VERBOSITY_MINIMUM) {
        this.container.style.overflow = "hidden";
    }
    if (this.options['clusterRadius']) {
    	this.clusterRadius = this.options['clusterRadius'];
    }
    this.highlightLocationId = null;
    if (this.options['highlightLocationId']) {
    	this.highlightLocationId = this.options.highlightLocationId;
    	this.highlightedLocations = {};
    	this.highlightedLocations[this.highlightLocationId] = true;
    }
}

HotelMap.prototype.initialize = function() {
    this.hideLoadingBackground();
    this.map = new GMap2(this.container);
    if (this.options.verbosity >= VERBOSITY_MAXIMUM) {
      this.map.addControl(new GLargeMapControl(), new GControlPosition(new GSize(5, 5), new GSize(3, 40)));
      this.map.addControl(new GMapTypeControl());
    }
    this.createMapTypes();
    
    GEvent.addListener(this.map, "zoomend", function(oldLevel, newLevel) {
        if (this.showLandmarkControl != null) {
            this.showLandmarkControl.updateCheckbox(newLevel);
        }
        this.refreshAsync();
    }.bind(this));
    
    GEvent.addListener(this.map, "moveend", function() {
        if (this.locationList.isInitialized()) {
            this.refreshVisibleLocations();
        }
    }.bind(this));
    
    GEvent.addListener(this.map, "click", function(overlay) {
        if (overlay != null && this.options.verbosity >= VERBOSITY_MEDIUM) { // clicked on marker
            this.showMarkerInfo(overlay);
        }
    }.bind(this));
    
    this.hotel_icon = new GIcon(G_DEFAULT_ICON);
    this.hotel_icon.image = "http://www.asiawebdirect.com/chang/images/maps/hotel-icon.gif";
    this.hotel_icon.iconSize = new GSize(25, 25);
    this.hotel_icon.shadowSize = new GSize(35, 26);

    this.hotel_icon_faded = new GIcon(G_DEFAULT_ICON);
    this.hotel_icon_faded.iconSize = new GSize(25, 25);
    this.hotel_icon_faded.shadowSize = new GSize(0, 0);
    this.hotel_icon_faded.image = "http://www.asiawebdirect.com/chang/images/maps/hotel-icon-fade.png";
    
    var lm_classifications = [{name: 'Activity',      width: 23, height: 23}, 
                              {name: 'Airport',       width: 23, height: 23},
                              {name: 'Attraction',    width: 20, height: 26},
                              {name: 'Night Spot',    width: 23, height: 23},
                              {name: 'Restaurant',    width: 23, height: 23},
                              {name: 'Shop',          width: 23, height: 23},
                              {name: 'Train Station', width: 23, height: 23}];
    this.landmark_icons = {};
    for (var cIdx = 0; cIdx < lm_classifications.length; cIdx++) {
        var c = lm_classifications[cIdx];
        var imgName = c.name.replace(' ', '_').toLowerCase() + '.gif';
        this.landmark_icons[c.name] = this.createIcon('http://www.asiawebdirect.com/chang/images/maps/landmarks/' + imgName, parseInt(c.width * .8), parseInt(c.height * .8));
    }
    defineOverlayWidgets();
    this.MapLabel = defineMapLabel();
    
    var LocationListControl = defineLocationListControl();
   
    this.locationList = new LocationListControl(this);
    if (this.options.verbosity >= VERBOSITY_MAXIMUM) {
        this.map.addControl(this.locationList);
    }
    
    var ShowLandmarkControl  = defineShowLandmarkControl();
    this.showLandmarkControl = new ShowLandmarkControl(this);
    if (this.options.verbosity >= VERBOSITY_MAXIMUM) {
        this.map.addControl(this.showLandmarkControl);
    }
    
    this.tooltipDiv = document.createElement("div");
    this.tooltipDiv.className = "map_tooltip";
    this.map.getContainer().appendChild(this.tooltipDiv);
    
    if (this.options.location) {
        this.map.setCenter(new GLatLng(this.options.location.lat, this.options.location.lng), this.options.location.zoom);
    }
    if (this.options.mapType) {
        this.map.setMapType(this.mapTypes[this.options.mapType]);
    }
    
    if (this.options.init) {
        this.options.init(this);
    }
}

HotelMap.prototype.addLabel = function(point) {
    var label = {
        lat: point.lat(),
        lng: point.lng(),
        name: 'New Label',
        anchor: 'left',
        zoom: this.map.getZoom()
    }
    this.labels.push(label);
    this.refreshAsync();
}

HotelMap.prototype.createIcon = function(imgUrl, width, height) {
    var icon = new GIcon(G_DEFAULT_ICON);
    icon.image = imgUrl;
    icon.iconSize = new GSize(width, height);
    icon.shadowSize = new GSize(0, 0);
    return icon;
}

HotelMap.prototype.showMarkerInfo = function(overlay) {
    if (overlay._markerType == MARKER_TYPE_CLUSTER) {
        overlay.openInfoWindowHtml(new HotelMapClusterList(this, overlay).html);
    } else if (overlay._markerType == MARKER_TYPE_SINGLE) {
        this.requestHotelInfo(overlay, this.locations[overlay._dataIdx].source_id);
    } else if (overlay._markerType == MARKER_TYPE_LANDMARK) {
        var loc = this.locations[overlay._dataIdx];
        if (loc.id == null) {
            overlay.openInfoWindowHtml(new EditLandMark(this, overlay, null, loc.idPath, loc.path).html);
        } else {
            overlay.openInfoWindowHtml(new LandmarkInfo(this, overlay, loc).html);
        }
    } else if (overlay._markerType == MARKER_TYPE_LABEL) {
        var label = this.labels[overlay._dataIdx];
        this.map.openInfoWindowHtml(overlay.point, new EditLabel(this, label).html);
    }
}

HotelMap.prototype.createMapTypes = function() {
    this.mapTypes = {};
    var types = this.map.getMapTypes();
    for (var i = 0; i < types.length; i++) {
        this.mapTypes[types[i].getName()] = types[i];
    }
}

HotelMap.prototype.showLoadingBackground = function() {
    this.container.className = "mapLoading";
}

HotelMap.prototype.hideLoadingBackground = function() {
    this.container.className = "";
}

HotelMap.prototype.resize = function(widthPx, heightPx) {
    var c = this.map.getContainer();
    c.style.width  = widthPx  + 'px';
    c.style.height = heightPx + 'px';
    this.map.checkResize();
    this.locationList.setHeightBasedOnMap(this.map);
}

HotelMap.prototype.requestHotelInfo = function(overlay, id, callbackFunc) {
	if (!callbackFunc) {
		callbackFunc = function(data) {
            var hotel = data.evalJSON().hotel;
            this.createHotelInfoTabs(overlay, hotel, this.locations[overlay._dataIdx]);			
		}.bind(this);
	}
    ajax({
        serviceName: 'hotelInfo',
        url: 'http://www.asiawebdirect.com/chang/maps.php/json/loadHotelInfo?serviceName=hotelInfo&hotelId=' + id,
        callback: callbackFunc
    });
}

HotelMap.prototype.createHotelInfoTabs = function(overlay, hotel, location) {   
    var overview    = new HotelMapOverview(location, hotel);
    var facilities  = new HotelMapFacilities(location, hotel);
    var hotelPhotos = new HotelMapPhotos(location, hotel);
    var comments    = new HotelMapGuestComments(location, hotel);

    overlay.openInfoWindowTabs([overview.tab, facilities.tab, hotelPhotos.tab, comments.tab]);
    return {'overview' : overview.tab, 'facilities' : facilities.tab, 'photos' : hotelPhotos.tab, 'comments' : comments.tab};
}

HotelMap.prototype.locTypeToMarkerType = function(locType) {
    if (locType == LOCATION_TYPE_HOTEL) {
        return MARKER_TYPE_SINGLE;
    } else if (locType == LOCATION_TYPE_LANDMARK) {
        return MARKER_TYPE_LANDMARK;
    } else if (locType == LOCATION_TYPE_LABEL) {
        return MARKER_TYPE_LABEL;
    }
}

HotelMap.prototype.refreshVisibleLocations = function() {
    var visibleMarkers = [];
    var mapBounds = this.map.getBounds();
    for (var i = 0; i < this.allMarkers.length; i++) {
        var marker = this.allMarkers[i];
        if (mapBounds.containsLatLng(marker.getLatLng())) {
            visibleMarkers.push(marker);
        }
    }
    this.visibleMarkers = visibleMarkers;
}

HotelMap.prototype.getVisibleHotels = function() {
    return this.getMarkersForLocationType(this.visibleMarkers, LOCATION_TYPE_HOTEL);
}

HotelMap.prototype.getVisibleLandmarks = function() {
    return this.getMarkersForLocationType(this.visibleMarkers, LOCATION_TYPE_LANDMARK);
}

HotelMap.prototype.getAllHotels = function() {
    return this.getMarkersForLocationType(this.allMarkers, LOCATION_TYPE_HOTEL);
}

HotelMap.prototype.getAllLandmarks = function() {
    return this.getMarkersForLocationType(this.allMarkers, LOCATION_TYPE_LANDMARK);
}

HotelMap.prototype.getMarkersForLocationType = function(markerList, locType) {
    var markers = [];
    for (var i = 0; i < markerList.length; i++) {
        var m = markerList[i];
        if (this.locations[m._dataIdx].location_type == locType) {
            markers.push(m);
        }
    }
    return markers;
}

HotelMap.prototype.getIconForLocation = function(loc) {
	var icon = null;
	if (loc.location_type == LOCATION_TYPE_HOTEL) {
		icon = this.hotel_icon;
		if (this.highlightedLocations != null && this.highlightedLocations[loc.source_id] != true) {
			// fade out all hotels except the highlighted location
			icon = this.hotel_icon_faded;
		}
	} else {
		icon = this.landmark_icons[loc.classification];
	}
	return icon;
}

HotelMap.prototype.getClusterImage = function(cluster) {
	if (this.highlightedLocations != null) {
		// check if the highlighted location is in this cluster
		for (var lIdx = 0; lIdx < cluster.length; lIdx++) {
			var loc = this.locations[cluster[lIdx]._dataIdx].source_id;
			if (this.highlightedLocations[loc]) {
				return "http://www.asiawebdirect.com/chang/images/maps/cluster-icon.gif";
			}
		}
		return "http://www.asiawebdirect.com/chang/images/maps/cluster-icon-fade.png";
	}
	return "http://www.asiawebdirect.com/chang/images/maps/cluster-icon.gif";
}

HotelMap.prototype.refreshAsync = function(finishCallback) {
	if (this._refreshing) {
		this._refreshQueued = true;
		if (finishCallback) this._refreshCbQueue.push(finishCallback);
		return;
	}
    this._refreshing = true;
    finishCallbacks = this._refreshCbQueue.clone();
    this._refreshCbQueue = [];
    if (finishCallback) {
    	finishCallbacks.push(finishCallback);
    }

	this.map.clearOverlays();
    var mapBounds = this.map.getBounds();
    
    var allMarkers     = [];
    var lmMarkers      = [];
    var visibleMarkers = [];

    processListAsync(this.locations, 100,
    	function (loc, llist, i) {
	        var markerType = this.locTypeToMarkerType(loc.location_type);
	        var m = new GMarker(new GLatLng(loc.lat, loc.lng), { icon: this.getIconForLocation(loc), draggable: true });
	        m._markerType = markerType;
	
	        if (loc.id != null)
	            m.disableDragging();
	 
	        if (this.zoomTarget != null && this.zoomTarget._dataIdx == i)
	            this.zoomTarget = m;
	
	        m._dataIdx = i;
	        allMarkers.push(m);
	
	        if (mapBounds.containsLatLng(m.getLatLng()))
	            visibleMarkers.push(m);
	        
	        if (m._markerType == MARKER_TYPE_LANDMARK)
	            lmMarkers.push(m);
    	}.bind(this),
    	function () {
    	    this.visibleMarkers  = visibleMarkers;
    	    this.landmarkMarkers = lmMarkers;
    	    this.allMarkers      = allMarkers.clone(); // we clone the array as the clusterMarkers function removes elements from the original    		
    	    var clusters = this.clusterMarkers(allMarkers, this.clusterRadius, this.map.getZoom());
    	    
    	    processListAsync(clusters, 30, function(clist, _, cIdx) {
    	    	    var c = clist[0];
	    	        c._clusterIdx = cIdx;
	    	        this.addMarkerToolTipEvent(c);
	    	        if (this.shouldAddOverlay(c)) {
	    	            this.map.addOverlay(c);
	    	        }
	    	        if (clist.length > 1) {
	    	            c._markerType = MARKER_TYPE_CLUSTER;
	    	            var img = this.getClusterImage(clist);
	    	            c.setImage(img);
	    	        }
    	    	}.bind(this),
    	    	function() {
    	    	    this.clusters = clusters;
    	    	    this.locationList.refresh();
    	    	    finishCallbacks.each(function (cb) { cb(); }.bind(this));
    	    	    this._refreshing = false;
    	    	    
	    	        if (this.zoomTarget != null) {
    	    	        this.showMarkerInfo(this.zoomTarget);
    	    	        this.zoomTarget = null;	    	        	
	    	        }
    	    	    
    	    	    if (this._refreshQueued) {
    	    	    	// process pending refreshes
    	    	    	this._refreshQueued = false;
    	    	    	this.refreshAsync();
    	    	    } else {
    	    	    	// all pending refreshes complete, fire global event
    	    	    	document.fire("map:refreshComplete");
    	    	    }
    	    	}.bind(this));
    	}.bind(this)
    );
}

HotelMap.prototype.refresh = function() {
    STOP_WATCH.checkpoint("Map refresh started");
    this.map.clearOverlays();
    STOP_WATCH.checkpoint("Overlays cleared");
    var mapBounds = this.map.getBounds();
    
    var allMarkers     = [];
    var lmMarkers      = [];
    var visibleMarkers = [];

    for (var i = 0; i < this.locations.length; i++) {
        var loc = this.locations[i];
        var markerType = this.locTypeToMarkerType(loc.location_type);
        var m = new GMarker(new GLatLng(loc.lat, loc.lng), {
            icon: this.getIconForLocation(loc),
            draggable: true
        });
        m._markerType = markerType;

        if (loc.id != null)
            m.disableDragging();
 
        if (this.zoomTarget != null && this.zoomTarget._dataIdx == i)
            this.zoomTarget = m;

        m._dataIdx = i;
        allMarkers.push(m);

        if (mapBounds.containsLatLng(m.getLatLng()))
            visibleMarkers.push(m);
        
        if (m._markerType == MARKER_TYPE_LANDMARK)
            lmMarkers.push(m);
    }
    STOP_WATCH.checkpoint("Created GMarkers for each location");

    this.visibleMarkers  = visibleMarkers;
    this.landmarkMarkers = lmMarkers;
    this.allMarkers      = allMarkers.clone(); // we clone the array as the clusterMarkers function removes elements from the original
    
    var clusters = this.clusterMarkers(allMarkers, this.clusterRadius, this.map.getZoom());
    STOP_WATCH.checkpoint("Clustered markers");
    
    for (var cIdx = 0; cIdx < clusters.length; cIdx++) {
        var c = clusters[cIdx][0];
        c._clusterIdx = cIdx;
        this.addMarkerToolTipEvent(c);
        if (this.shouldAddOverlay(c)) {
            this.map.addOverlay(c);
        }
        if (clusters[cIdx].length > 1) {
            c._markerType = MARKER_TYPE_CLUSTER;
            var img = this.getClusterImage(clusters[cIdx]);
            c.setImage(img);
        }
    }
    STOP_WATCH.checkpoint("Attached clusters to the map");
    
    for (var lIdx = 0; lIdx < this.labels.length; lIdx++) {
        (function(){
            var l = this.labels[lIdx];
            var node       = document.createElement("div");
            node.className = 'mapLabel';
            node.innerHTML = '&#8226;' + l.name;
            var zoomDiff   = l.zoom - this.map.getZoom();
            var fontSize   = 14 - (zoomDiff * 2);
            node.style.fontSize = fontSize + 'px';
            if (fontSize >= 8) {
                var overlay = new DraggableOverlay(new GLatLng(l.lat, l.lng), node, l.anchor);
                overlay._dataIdx    = lIdx;
                overlay._markerType = MARKER_TYPE_LABEL;
                
                GEvent.addListener(overlay, "move", function(o, p) {
                    l.lat = p.lat();
                    l.lng = p.lng();
                }.bind(this));
                this.map.addOverlay(overlay);
            }
        }).bind(this)();
    }
    
    this.clusters = clusters;
    if (this.zoomTarget != null) {
        this.showMarkerInfo(this.zoomTarget);
        this.zoomTarget = null;
    }
    this.locationList.refresh();
    STOP_WATCH.checkpoint("Map refresh finished");
}

HotelMap.prototype.shouldAddOverlay = function(o) {
    if (o._markerType == MARKER_TYPE_LANDMARK && this.showLandmarkControl != null) {
        return this.showLandmarkControl.isShowingLandmarks();
    }
    return true;
}

HotelMap.prototype.addMarkerToolTipEvent = function(marker) {
    GEvent.addListener(marker, "mouseover", function() { this.showToolTip(marker, {'showClusterText' : true}); }.bind(this));
}

HotelMap.prototype.showToolTip = function(marker, options) {
    GEvent.clearListeners(marker, "mouseout");
    var timeout = window.setTimeout(function() {
        this.tooltipDiv.style.display = 'none';
    }.bind(this), 3000);
    GEvent.addListener(marker, "mouseout", function() {
        window.clearTimeout(timeout);
        this.tooltipDiv.style.display = 'none';
    }.bind(this));
    
    var tooltip = options['tooltip'];
    if (!tooltip) {
        tooltip = this.locations[marker._dataIdx].name;
    }
    if (marker._markerType == MARKER_TYPE_CLUSTER && options['showClusterText']) {
        tooltip = this.clusters[marker._cIdx].length + " hotels at this point (click to choose and zoom)";
    }
        
    var markerPoint = this.map.fromLatLngToContainerPixel(marker.getLatLng());
    this.tooltipDiv.style.left = markerPoint.x + 'px';
    this.tooltipDiv.style.top = markerPoint.y + 'px';
    this.tooltipDiv.innerHTML = tooltip;
    this.tooltipDiv.style.display = 'block';
}

HotelMap.prototype.initializeZoomAndCenter = function(forceRefresh) {
	var currentZoom = this.map.getZoom();
    var bounds = new GLatLngBounds();
    for (var i = 0; i < this.locations.length; i++) {
        var loc = this.locations[i];
        if (loc.location_type == LOCATION_TYPE_HOTEL &&
            (this.highlightedLocations == null || this.highlightedLocations[loc.source_id])) {
            bounds.extend(new GLatLng(loc.lat, loc.lng));
        }
    }
    var zoom = this.map.getBoundsZoomLevel(bounds);
    this.map.setCenter(bounds.getCenter(), zoom);
    if (zoom == currentZoom && forceRefresh) {
    	this.refreshAsync();
    }
}

HotelMap.prototype.showHighlightedLocationPopup = function() {
	for (var mIdx = 0; mIdx < this.allMarkers.length; mIdx++) {
		var marker = this.allMarkers[mIdx];
		var loc    = this.locations[marker._dataIdx];
		if (loc.source_id == this.highlightLocationId) {
			var clusterMarker = this.clusters[marker._cIdx][0];
			this.requestHotelInfo(clusterMarker, loc.source_id, function(data) {
				clusterMarker.openInfoWindow(new MiniHotelMapOverview(loc, data.evalJSON().hotel).html);
			}.bind(this));
			return;
		}
	}
}

HotelMap.prototype.loadDestination = function(name, options) {
    ajax({
        serviceName: 'loadDestination',
        url: 'http://www.asiawebdirect.com/chang/maps.php/json/loadByDestName?serviceName=loadDestination&destMatch=' + name,
        callback: function(data) {
            var json = data.evalJSON();
            this.locations = json.hotels.concat(json.landmarks);
            this.allMarkers = [];
            this.visibleMarkers = [];
            if (!options['keepMapPos']) {
                this.initializeZoomAndCenter();
            }
            this.refreshAsync(function () {
                if (options['openLocList']) {
                    this.locationList.openList();
                }
                if (options['onload']) {
                	options.onload(this, json);
                }            	
            }.bind(this));
        }.bind(this)
    });
}

/**
 * Cross-domain comptaible way of loading locations by IDs.  The number of IDs that an be loaded at once is limited as this method uses HTTP Get.
 */
HotelMap.prototype.loadLocations = function(ids) {
    ajax({
        serviceName: 'loadByIDs',
        url: 'http://www.asiawebdirect.com/chang/maps.php/json/loadByIDs?serviceName=loadByIDs&locationIds=' + ids,
        callback: function(data) {
            this.locations = data.evalJSON().hotels;
            this.allMarkers = [];
            this.visibleMarkers = [];
            this.initializeZoomAndCenter(true);
        }.bind(this)
    });
}

/**
 * Preferrable way to load locations by IDs: This allows the use of HTTP Post and as such allows sending more IDs in the request.
 * NOTE: This method uses XMLHttpRequest and as such is not cross-domain compatible.
 */
HotelMap.prototype.loadLocationsXHR = function(ids) {
	ajax_xhr({
		url: 'http://www.asiawebdirect.com/chang/maps.php/json/loadByIDsXHR',
		params: {'locationIds' : ids},
		callback: function(data) {
            this.locations = data.evalJSON().hotels;
            this.initializeZoomAndCenter();
            this.refresh();
		}.bind(this)
	});
}

/**
 * Filter the current location set to show only the given IDs (for the given location type).
 * If locType is ommitted, then hotel is assumed.
 * 
 * Note: IDs should be an object mapping IDs to true 
 */
HotelMap.prototype.filterLocations = function(ids, locType) {
	if (this.origLocations == null) {
		this.origLocations = this.locations;
	}
	if (!locType) {
		locType = LOCATION_TYPE_HOTEL;
	}
	var idsInc = {};
	for (var i = 0; i < ids.length; i++) {
		idsInc[ids[i]] = true;
	}
	this.highlightedLocations = idsInc;
	this.initializeZoomAndCenter(true);
}

OFFSET = 268435456;
RADIUS = OFFSET / Math.PI;

function lonToX(lon) {
    return Math.round(OFFSET + RADIUS * lon * Math.PI / 180);        
}

function latToY(lat) {
    return Math.round(OFFSET - RADIUS * 
                Math.log((1 + Math.sin(lat * Math.PI / 180)) / 
                (1 - Math.sin(lat * Math.PI / 180))) / 2);
}

function pixelDistance(lat1, lon1, lat2, lon2, zoom) {
    var x1 = lonToX(lon1);
    var y1 = latToY(lat1);

    var x2 = lonToX(lon2);
    var y2 = latToY(lat2);

    return Math.sqrt(Math.pow((x1 - x2), 2) + Math.pow((y1 - y2), 2)) >> (21 - zoom);
}

HotelMap.prototype.calculateOptimalZoom = function(marker, allMarkers, startZoom) {
    var zoom;
    if (!startZoom) {
        zoom = this.map.getZoom();
    } else {
        zoom = startZoom;
    }
    while (zoom < 17) {
        if (!this.markerOverlaps(marker, allMarkers, this.clusterRadius, zoom)) {
            break;
        }
        zoom++;
    }
    return zoom;
}

HotelMap.prototype.markerOverlaps = function(marker, markers, distance, zoom) {
    for (var markerIndex = 0; markerIndex < markers.length; markerIndex++) {
        var target = markers[markerIndex];
        if (target == undefined) {
            continue;
        }
        if (marker == target) {
            continue;
        }
        var pixels = pixelDistance(
                marker.getLatLng().lat(), marker.getLatLng().lng(), target.getLatLng().lat(), target.getLatLng().lng(), zoom);
        if (distance > pixels) {
            return true;
        }
    }
    return false;
}

HotelMap.prototype.clusterMarkers = function(markers, distance, zoom) {
    var clustered = []
    /* Loop until all markers have been compared. */
    while (markers.length) {
        var marker  = markers.pop();
        if (marker == undefined) {
            continue;
        }
        var cluster = [marker];
        marker._cIdx = clustered.length;
        /* Compare against all markers which are left. */
        if (marker._markerType == MARKER_TYPE_SINGLE) {
            for (var markerIndex = 0; markerIndex < markers.length; markerIndex++) {
                var target = markers[markerIndex];
                if (target == undefined) continue;
                if (zoom >= 17) continue;
                if (marker._markerType == MARKER_TYPE_LANDMARK) continue; // don't check for overlapping landmarks
                
                var pixels = pixelDistance(
                    marker.getLatLng().lat(), marker.getLatLng().lng(), target.getLatLng().lat(), target.getLatLng().lng(), zoom);
                
                /* If two markers are closer than given distance remove */
                /* target marker from array and add it to cluster.      */
                if ((distance) > pixels && (zoom < 17)) {
                    //console.log("CLUSTER: Marker and target differ by: " + pixels + "px");
                    delete markers[markerIndex];
                    target._cIdx = clustered.length;
                    cluster.push(target);
                } else {
                    //console.log("NO CLUSTER: Marker and target differ by: " + pixels + "px");
                }
            }
        }
        clustered.push(cluster);
    }
    return clustered;
}

HotelMap.prototype.removeLandmark = function(index) {
    var loc = this.locations[index];
    new Ajax.Request('/chang/maps_admin.php/landmarks/delete', {
        method: 'POST',
        parameters: {
            locId: loc.id
        },
        onSuccess: function(transport) {
            this.locations.splice(index, 1);
            this.refreshAsync();
        }.bind(this),
        onFailure: function() { },
        onException: function(e, f) { }
    });
}

/* -------------------------------------------------------------------------------------------- */
  
/**
 * HotelMapClusterList class
 */

function HotelMapClusterList(map, clusterMarker) {
    this.clusterMarker = clusterMarker;
    this.map = map;

    var allLocations = map.clusters[clusterMarker._clusterIdx].clone();
    allLocations.sort(function (a, b) {
        var nameA = map.locations[a._dataIdx].name;
        var nameB = map.locations[b._dataIdx].name;
        if (nameA > nameB) {
            return 1;
        } else if (nameA == nameB) {
            return 0;
        }
        return -1;
    }.bind(this));

    this.html = tmpl(HotelMapClusterList.prototype.TEMPLATE, {
        'allMarkers' : allLocations,
        'locations'  : map.locations
        
    });
    
    waitFor(HotelMapClusterList.prototype.ID_TABLE, WAIT_FOR_CLUSTER_LIST, function(e) {
        document.getElementById("map_hotelClusterList_zoom").onclick = function(ev) {
            var locData = map.locations[allLocations[0]._dataIdx];
            var zoom    = map.calculateOptimalZoom(allLocations[0], map.allMarkers);
            map.map.setCenter(new GLatLng(locData.lat, locData.lng), zoom);            
        }.bind(this);
        for (var i = 0; i < allLocations.length; i++) {
            (function () {
                var markerIndex = i; /* close over index */
                var marker      = allLocations[markerIndex];
                var locData     = map.locations[marker._dataIdx];
                var link = document.getElementById(HotelMapClusterList.prototype.LOC_LINK_PREF + marker._dataIdx);
                link.onclick = function(ev) {
                    map.zoomTarget = marker;
                    var zoom = map.calculateOptimalZoom(marker, map.allMarkers);
                    map.map.setCenter(new GLatLng(locData.lat, locData.lng), zoom);
                }.bind(this);
            }).bind(this)();
        }
    }.bind(this));
}

HotelMapClusterList.prototype.TEMPLATE      = "map_hotelClusterList";
HotelMapClusterList.prototype.ID_TABLE      = "map_hotelClusterList_table";
HotelMapClusterList.prototype.LOC_LINK_PREF = "map_hotelClusterList_loc_";

/* -------------------------------------------------------------------------------------------- */

/**
 * HotelMapOverview class
 */

function HotelMapOverview(location, hotel) {
    this.location = location;
    this.hotel    = hotel;
    this.tab      = new GInfoWindowTab("Overview", tmpl(HotelMapOverview.prototype.TEMPLATE, {
        'hotelName'   : location.name,
        'hotelImage'  : (hotel.image != "" && hotel.image != null) ? hotel.image.url : "http://www.asiawebdirect.com/chang/images/no_photo.png",
        'starRating'  : hotel.starRating,
        'description' : hotel.description,
        'numRooms'    : hotel.numRooms,
        'address'     : hotel.address,
        'hotelUrl'    : hotel.url,
        'showExtraContent' : true
    }));
}

HotelMapOverview.prototype.TEMPLATE = "hotelInfoTab_overview";

/* -------------------------------------------------------------------------------------------- */

/**
 * MiniHotelMapOverview class
 */

function MiniHotelMapOverview(location, hotel) {
    this.location = location;
    this.hotel    = hotel;
    this.html     = tmpl(MiniHotelMapOverview.prototype.TEMPLATE, {
        'hotelName'   : location.name,
        'hotelImage'  : (hotel.image != "" && hotel.image != null) ? hotel.image.url : "http://www.asiawebdirect.com/chang/images/no_photo.png",
        'starRating'  : hotel.starRating,
        'description' : hotel.description,
        'numRooms'    : hotel.numRooms,
        'address'     : hotel.address,
        'hotelUrl'    : hotel.url,
        'showExtraContent' : false
    });
}

MiniHotelMapOverview.prototype.TEMPLATE = "hotelInfoTab_overview";

/* -------------------------------------------------------------------------------------------- */

/**
 * HotelMapFacilities class
 */
_FAC_ID_COUNTER = 0;
function HotelMapFacilities(location, hotel) {
    _FAC_ID_COUNTER++;
    this.hotelFacilities  = hotel.hotelFacilities;
    this.roomFacilities   = hotel.roomFacilities;
    this.hotelFacIdPrefix = HotelMapFacilities.prototype.ID_HOTEL_FACILITIES + _FAC_ID_COUNTER;
    this.roomFacIdPrefix  = HotelMapFacilities.prototype.ID_ROOM_FACILITIES  + _FAC_ID_COUNTER;
    this.tab              = new GInfoWindowTab("Facilities", tmpl(HotelMapFacilities.prototype.TEMPLATE, {
        'hotelFacilities' : array_split(this.hotelFacilities, 3),
        'roomFacilities'  : array_split(this.roomFacilities, 3),
        'hotelIdPrefix'   : this.hotelFacIdPrefix,
        'roomIdPrefix'    : this.roomFacIdPrefix,
        'hotelName'       : location.name,
        'hotelUrl'        : hotel.url
    }));

    this.throttle = new EventThrottle(2);

    var clickCreator = function(thisWindow, otherWindow) {
        return function(e) {
            if (this.throttle.isFinished()) {
                this.throttle.start();
                Effect.Shrink(thisWindow, {
                    'queue' : 'front',
                    afterFinish: function() { this.throttle.checkpoint(); }.bind(this)
                });
                Effect.Grow(otherWindow, {
                    'queue' : 'end',
                    afterFinish: function() { this.throttle.checkpoint(); }.bind(this)
                });
            }
        }.bind(this);
    }.bind(this);

    waitFor(this.hotelFacIdPrefix, WAIT_FOR_FACILITY_LIST, function(e) {
        e.onclick = clickCreator(this.hotelFacIdPrefix, this.roomFacIdPrefix);
    }.bind(this));
    
    waitFor(this.roomFacIdPrefix, WAIT_FOR_FACILITY_LIST, function(e) {
        e.onclick = clickCreator(this.roomFacIdPrefix, this.hotelFacIdPrefix);
    }.bind(this));
}

HotelMapFacilities.prototype.TEMPLATE            = "hotelInfoTab_facilities";
HotelMapFacilities.prototype.ID_HOTEL_FACILITIES = "hotelFacilities";
HotelMapFacilities.prototype.ID_ROOM_FACILITIES  = "roomFacilities";

/* -------------------------------------------------------------------------------------------- */

/**
 * HotelMapPhotos class
 */
_THUMB_ID_COUNTER = 0;
function HotelMapPhotos(location, hotel) {
    _THUMB_ID_COUNTER++;
    this.photos          = hotel.photos;
    this.thumbnailPrefix = 'thumbnail' + _THUMB_ID_COUNTER + "_";
    this.moveLeftId      = HotelMapPhotos.prototype.ID_MOVE_LEFT  + _THUMB_ID_COUNTER;
    this.moveRightId     = HotelMapPhotos.prototype.ID_MOVE_RIGHT + _THUMB_ID_COUNTER;
    if (this.photos.length > 0) {
        this.tab = new GInfoWindowTab("Photos", tmpl(HotelMapPhotos.prototype.TEMPLATE_PHOTOS, {
            'photos'      : array_partition(this.photos, 2),
            'idPrefix'    : this.thumbnailPrefix,
            'moveLeftId'  : this.moveLeftId,
            'moveRightId' : this.moveRightId,
            'hotelName'   : location.name,
            'hotelUrl'    : hotel.url
        }));
    } else {
        this.tab = new GInfoWindowTab("Photos", tmpl(HotelMapPhotos.prototype.TEMPLATE_NO_PHOTOS, {}));
        return;
    }
    this.borderHighlight = "dashed 1px #000";
    this.borderNormal    = "solid 1px #000";
    this.selectedImg     = 0;
    
    /**
     * Schedule a callback when each thumbnail img tag is present to add an appropriate onclick handler as well
     * as selecting the first image by default.
     */
    for (var i = 0; i < this.photos.length; i++) {
        (function() {
            var j = i /* close over i */;
            waitFor(this.thumbnailPrefix + j, WAIT_FOR_THUMBNAIL_INTERVAL, function(e) {
                e.onclick = function(ev) { this.selectImage(j); }.bind(this);
                if (j == 0) {
                    this.selectImage(j);
                }
            }.bind(this));
        }).bind(this)();
    }

    waitFor(this.moveLeftId, WAIT_FOR_IMAGE_BUTTON_INTERVAL, function(e) {
        e.onclick = function(ev) { this.selectImage(this.selectedImg - 1); }.bind(this);
    }.bind(this));

    waitFor(this.moveRightId, WAIT_FOR_IMAGE_BUTTON_INTERVAL, function(e) {
        e.onclick = function(ev) { this.selectImage(this.selectedImg + 1); }.bind(this);
    }.bind(this));
}

HotelMapPhotos.prototype.selectImage = function(imageIndex) {
    if (imageIndex < 0 || imageIndex >= this.photos.length) return; // invalid index
    var photo     = this.photos[imageIndex];
    var img       = $(this.thumbnailPrefix + imageIndex);
    var largeImg  = $("hotelInfoTab_photos_preview");
    var imgTxt    = $("hotelInfoTab_photos_imageText");
    var moveLeft  = $(this.moveLeftId);
    var moveRight = $(this.moveRightId);

    this.selectedImg = imageIndex; /* update reference to selected image index */
    largeImg.src     = img.src;    /* replace large image */
    imgTxt.innerHTML = photo.text; /* replace image description */
    
    // reset the border for all images
    for (var j = 0; j < this.photos.length; j++) {
        document.getElementById(this.thumbnailPrefix + j).style.border = this.borderNormal;
    }
    img.style.border = this.borderHighlight; /* set selected image border */

    // update the navigation images
    moveLeft.src  = (imageIndex > 0) ? HotelMapPhotos.prototype.IMG_MOVE_LEFT : HotelMapPhotos.prototype.IMG_MOVE_LEFT_DIS;
    moveRight.src = (imageIndex < (this.photos.length - 1)) ? HotelMapPhotos.prototype.IMG_MOVE_RIGHT : HotelMapPhotos.prototype.IMG_MOVE_RIGHT_DIS;
}

HotelMapPhotos.prototype.TEMPLATE_PHOTOS    = "hotelInfoTab_photos";
HotelMapPhotos.prototype.TEMPLATE_NO_PHOTOS = "hotelInfoTab_noPhotos";
HotelMapPhotos.prototype.ID_MOVE_LEFT       = "hotelInfoTab_photos_moveLeft";
HotelMapPhotos.prototype.ID_MOVE_RIGHT      = "hotelInfoTab_photos_moveRight";
HotelMapPhotos.prototype.IMG_MOVE_LEFT      = "http://www.asiawebdirect.com/chang/images/left_arrow.png";
HotelMapPhotos.prototype.IMG_MOVE_RIGHT     = "http://www.asiawebdirect.com/chang/images/right_arrow.png";
HotelMapPhotos.prototype.IMG_MOVE_LEFT_DIS  = "http://www.asiawebdirect.com/chang/images/left_arrow_disabled.png";
HotelMapPhotos.prototype.IMG_MOVE_RIGHT_DIS = "http://www.asiawebdirect.com/chang/images/right_arrow_disabled.png";


/* -------------------------------------------------------------------------------------------- */

/**
 * HotelMapGuestComments Class
 */
_REV_ID_COUNTER = 0;
function HotelMapGuestComments(location, hotel) {
    _REV_ID_COUNTER++;
    this.reviews             = hotel.reviews;
    this.reviewGroups        = array_partition(this.reviews, 2);
    this.currentPageIdx      = 0;
    this.throttle            = new EventThrottle(2);
    this.reviewPageIdPrefix  = HotelMapGuestComments.prototype.REV_PAGE_PREF  + _REV_ID_COUNTER + "_";
    this.reviewGroupIdPrefix = HotelMapGuestComments.prototype.REV_GROUP_PREF + _REV_ID_COUNTER + "_";
    
    if (this.reviews.length == 0) {
        this.tab = new GInfoWindowTab("Comments", tmpl(HotelMapGuestComments.prototype.NO_COMMENTS_TEMPLATE, {}));
        return;
    }
    this.tab = new GInfoWindowTab("Comments", tmpl(HotelMapGuestComments.prototype.TEMPLATE, {
        'reviews'       : this.reviewGroups,
        'pageIdPrefix'  : this.reviewPageIdPrefix,
        'groupIdPrefix' : this.reviewGroupIdPrefix,
        'hotelName'     : location.name,
        'hotelUrl'      : hotel.url
    }));
    
    waitFor(this.reviewGroupIdPrefix + '0', WAIT_FOR_REVIEW_INTERVAL, function(e) {
        e.style.display = ""; 
    });
    
    for (var groupIdx = 0; groupIdx < this.reviewGroups.length; groupIdx++) {
        (function() {
            var page = groupIdx; /* close over outer variable */
            waitFor(this.reviewPageIdPrefix + page, WAIT_FOR_REVIEW_PAGE_INTERVAL, function(e) {
                e.onclick = function(e) {
                    if (page != this.currentPageIdx && this.throttle.isFinished()) {
                        this.throttle.start();
                        this.showPage(page);
                    }
                }.bind(this);
                if (page == 0) {
                    e.className = "hotelInfoTab_guestComments_link_active";
                }
            }.bind(this));
        }).bind(this)();
    }
    
}

HotelMapGuestComments.prototype.showPage = function(pageIdx) {
    Effect.Puff(this.reviewGroupIdPrefix + this.currentPageIdx, {
        'queue' : 'front',
        afterFinish: function() {
            this.throttle.checkpoint();
        }.bind(this)
    });
    Effect.Appear(this.reviewGroupIdPrefix + pageIdx, {
        'queue' : 'end',
        afterFinish: function() {
            this.throttle.checkpoint();
        }.bind(this)
    });
    document.getElementById(this.reviewPageIdPrefix + this.currentPageIdx).className = "hotelInfoTab_guestComments_page_link";
    document.getElementById(this.reviewPageIdPrefix + pageIdx).className = "hotelInfoTab_guestComments_link_active";
    this.currentPageIdx = pageIdx;
}

HotelMapGuestComments.prototype.TEMPLATE             = 'hotelInfoTab_guestComments';
HotelMapGuestComments.prototype.NO_COMMENTS_TEMPLATE = 'hotelInfoTab_noGuestComments';
HotelMapGuestComments.prototype.REV_GROUP_PREF       = 'hotelInfoTab_guestComments_reviewGroup_';
HotelMapGuestComments.prototype.REV_PAGE_PREF        = 'hotelInfoTab_guestComments_page_link_';

/* -------------------------------------------------------------------------------------------- */

/**
 * Show Landmark Control;
 * 
 * We defer the definition of this class as it requires the google maps javascript to be loaded to instantiate the parent prototype.
 */
LANDMARK_ZOOM_THRESHOLD  = 15;
function defineShowLandmarkControl() {
    
    function ShowLandmarkControl(map) {
        this.showLandmarks = false;
        this.userOverride  = false; // user is controlling landmarks manually
        this.hotelMap      = map;
    }
    
    ShowLandmarkControl.prototype = new GControl();
    
    ShowLandmarkControl.prototype.initialize = function(map) {
        var container = document.createElement("div");
        container.innerHTML = tmpl("map_showLandmarkControl", {});

        map.getContainer().appendChild(container);
        $('map_showLandmarkControl_checkbox').onclick = function() {
            this.toggle();
        }.bind(this);
        this.updateCheckbox();
        return container;
    }
    
    ShowLandmarkControl.prototype.getDefaultPosition = function() {
        return new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(10, 26));
    }
    
    ShowLandmarkControl.prototype.updateCheckbox = function(zoomLevel) {
        if (!this.userOverride) {
            this.showLandmarks = zoomLevel >= LANDMARK_ZOOM_THRESHOLD;
            this._setCheckBoxValue(this.showLandmarks ? "checked" : "");
        }
    }
    
    ShowLandmarkControl.prototype.isShowingLandmarks = function() {
        return this.showLandmarks;
    }
    
    ShowLandmarkControl.prototype.toggle = function() {
        this.userOverride  = true;
        this.showLandmarks = !this.showLandmarks;
        this._setCheckBoxValue(this.showLandmarks ? "checked" : "");
        this.hotelMap.refreshAsync();
    }
    
    ShowLandmarkControl.prototype._setCheckBoxValue = function(checked) {
        var cb = $('map_showLandmarkControl_checkbox');
        if (cb) {
            cb.checked = checked;
        }
    }
    
    return ShowLandmarkControl;
}

/* -------------------------------------------------------------------------------------------- */

MOVE_STATUS_FIXED  = 1
MOVE_STATUS_MOVING = 2;
function LandmarkInfo(map, overlay, landmark) {
    this.hotelMap = map;
    this.overlay  = overlay;
    this.landmark = landmark;
    if (!overlay['_moveStatus']) {
        overlay._moveStatus = MOVE_STATUS_FIXED;
    }
    this.html     = tmpl("map_landmark_info", {
        'landmarkName' : landmark.name,
        'landmarkUrl' : landmark.website_url,
        'landmarkPhotoUrl' : landmark.photo_url,
        'landmarkDescription' : landmark.description,
        'landmarkClassification' : landmark.classification,
        'moveLabel' : (overlay['_moveStatus'] == MOVE_STATUS_FIXED) ? "Move" : "Set Position",
        'moveId'    : (overlay['_moveStatus'] == MOVE_STATUS_FIXED) ? "move" : "setpos",
        'canEdit'   : this.hotelMap.options['edit']
    });

    waitFor("map_landmark_info_edit_link", DEFAULT_INTERVAL, function(e) {
        e.onclick = function() {
            this.hotelMap.map.updateInfoWindow([new GInfoWindowTab("_",
                    new EditLandMark(this.hotelMap, this.overlay, this.landmark).html)]);
        }.bind(this);
    }.bind(this));

    waitFor("map_landmark_info_move_link", DEFAULT_INTERVAL, function(e) {
        e.onclick = function() {
            this.overlay._moveStatus = MOVE_STATUS_MOVING;
            this.overlay.enableDragging();
            this.hotelMap.map.closeInfoWindow();
        }.bind(this);
    }.bind(this));
    
    waitFor("map_landmark_info_setpos_link", DEFAULT_INTERVAL, function(e) {
        e.onclick = function() {
            this.overlay._moveStatus = MOVE_STATUS_FIXED;
            this.overlay.disableDragging();
            this.updateLandmarkPosition();
        }.bind(this);
    }.bind(this));
    
    waitFor("map_landmark_info_remove_link", DEFAULT_INTERVAL, function(e) {
        e.onclick = function() {
            this.hotelMap.removeLandmark(this.overlay._dataIdx);
        }.bind(this);
    }.bind(this));
    
    waitForAll(["map_landmark_info_img", "map_landmark_info_heading", "map_landmark_info_body"], DEFAULT_INTERVAL, function(elements) {
        var img  = elements[0];
        var head = elements[1];
        var body = elements[2];
        
        body.style.height = (img.offsetHeight - head.offsetHeight) + 'px';
    }.bind(this));
}

LandmarkInfo.prototype.updateLandmarkPosition = function() {
    new Ajax.Request('/chang/maps_admin.php/landmarks/updatePosition', {
        method: 'POST',
        parameters: {
            id:        this.landmark.id,
            longitude: this.overlay.getLatLng().lng(),
            latitude:  this.overlay.getLatLng().lat()
        },
        onSuccess: function(transport) {
            this.landmark.lat = this.overlay.getLatLng().lat();
            this.landmark.lng = this.overlay.getLatLng().lng();
            this.hotelMap.map.closeInfoWindow();
        }.bind(this),
        onFailure: function() { },
        onException: function(e, f) { }
    });
}

/* -------------------------------------------------------------------------------------------- */

_editLabelIdCounter = 0;
function EditLabel(map, label) {
    this.map = map;
    this.label = label;
    this.idSuffix = _editLabelIdCounter++;
    this.html = tmpl("template_edit_label", {'idSuffix' : this.idSuffix});
    waitFor("cancelEditLabel" + this.idSuffix, DEFAULT_INTERVAL, function(b) {
        
    }.bind(this));
    waitFor("saveEditLabel" + this.idSuffix, DEFAULT_INTERVAL, function(b) {
        b.onclick = function() {
            this.label.name = this.getLabelText();
            this.label.anchor = this.getLabelAnchor();
            this.map.refreshAsync();
        }.bind(this);
    }.bind(this));
}

EditLabel.prototype.getLabelText = function() {
    return $('editLabelText' + this.idSuffix).value;
}

EditLabel.prototype.getLabelAnchor = function() {
    return $('editLabelAnchor' + this.idSuffix).value;
}

/* -------------------------------------------------------------------------------------------- */

_idCounter = 0;
function EditLandMark(map, marker, landmark, idPath, path) {
    if (!idPath) idPath = '/139/11/75/115/';
    if (!path)   path   = 'Asia/Thailand/Phuket/Patong Beach/';
        
    this.idSuffix = _idCounter++;
    this.map      = map;
    this.marker   = marker;
    this.landmark = landmark;
    if (landmark == null) {
        this.html = tmpl("template_new_landmark", this.getDefaultLandmarkValues());
    } else {
        this.html = tmpl("template_new_landmark", this.getLandmarkValues(landmark));
    }
    waitFor("editLandMark", DEFAULT_INTERVAL, function() {
        if (this.landmark == null) {
            setupDestinationLists(idPath, path);
        } else {
            setupDestinationLists(this.landmark.id_path, this.landmark.path);
        }
    }.bind(this));

    waitFor("landmark_classification" + this.idSuffix, DEFAULT_INTERVAL, function(select) {
       ajax({
           serviceName : 'landMarkClassifications',
           url         : '/chang/maps.php/json/loadLandmarkClassifications?serviceName=landMarkClassifications',
           callback    : function(data) {
               var values = data.evalJSON();
               var selectedIndex = 0;
               for (var i = 0; i < values.length; i++) {
                   var option = new Option(values[i].name, values[i].id);
                   if (this.landmark != null && this.landmark.classification == values[i].name) {
                       selectedIndex = i;
                   }
                   select.options[select.options.length] = option;
               }
               select.selectedIndex = selectedIndex;
           }.bind(this)
        });
    }.bind(this));
    
    waitFor("button_cancel_landmark" + this.idSuffix, DEFAULT_INTERVAL, function(b) {
        b.onclick = function() { this.map.map.closeInfoWindow(); }.bind(this);
    }.bind(this));
    
    waitFor("button_save_landmark" + this.idSuffix, DEFAULT_INTERVAL, function(b) {
        b.onclick = function() {
            var pos = this.marker.getLatLng();
            new Ajax.Request('/chang/maps_admin.php/landmarks/save', {
                method: 'POST',
                parameters: {
                    id:             this.landmark != null ? this.landmark.id : null,
                    longitude:      pos.lng(),
                    latitude:       pos.lat(),
                    name:           this.getParam('landmark_name'),
                    description:    this.getParam('landmark_description'),
                    classification: this.getParam('landmark_classification'),
                    photoUrl:       this.getParam('landmark_photo_url'),
                    websiteUrl:     this.getParam('landmark_website_url'),
                    destinationId:  getSelectedDestinationId()
                },
                onSuccess: function(transport) {
                    var lm = transport.responseText.evalJSON().landmark;
                    this.map.locations[this.marker._dataIdx] = lm; // replace existing location
                    this.map.refreshAsync();
                }.bind(this),
                onFailure: function() { },
                onException: function(e, f) { }
            });
        }.bind(this);
    }.bind(this));
}

EditLandMark.prototype.getDefaultLandmarkValues = function() {
    return {
        'idSuffix'     : this.idSuffix,
        'name'         : '&lt;Enter Name&gt;',
        'url'          : 'Enter url',
        'photoUrl'     : 'Enter photo url',
        'description'  : 'Enter description'
    };
}

EditLandMark.prototype.getLandmarkValues = function(lm) {
    return {
        'idSuffix'    : this.idSuffix,
        'name'        : lm.name,
        'url'         : lm.website_url,
        'photoUrl'    : lm.photo_url,
        'description' : lm.description
    }
}

EditLandMark.prototype.getParam = function(name) {
    return $(name + this.idSuffix).value;
}

function defineMapLabel() {
    
  function MapLabel(point) {
    this.point = point;
  }
  
  MapLabel.prototype = new GOverlay();
  
  MapLabel.prototype.initialize = function(map) {
      this.map = map;
      var container = document.createElement("div");
      container.className = 'mapLabel';
      container.innerHTML = "Hello World!!!";

      map.getPane(G_MAP_FLOAT_SHADOW_PANE).appendChild(container);
      this.div = container;
      return container;
  }
  
  MapLabel.prototype.redraw = function(force) {
      var p = this.map.fromLatLngToDivPixel(this.point);
      var h = parseInt(this.div.clientHeight);
      this.div.style.left = p.x + "px";
      this.div.style.top  = (p.y - h) + "px";
  }
  
  return MapLabel;
}

function defineOverlayWidgets() {
    
    function DraggableOverlay(node, anchor, point) {
        this.point     = point;
        this.node      = node;
        this.anchor    = anchor;
        this.draggable = true;
        this.dragging  = false;
    }
    
    DraggableOverlay.prototype = new GOverlay();
    
    DraggableOverlay.prototype.setPoint = function(point) {
        this.point = point;
    }
    
    DraggableOverlay.prototype.setAnchor = function(anchor) {
        this.anchor = anchor;
    }
    
    // override this method to create a custom node for the overlay
    DraggableOverlay.prototype.createNode = function() {
        return document.createElement("div");
    }
    
    DraggableOverlay.prototype.initialize = function(map) {
        this.map  = map;
        this.node = this.createNode();
        GEvent.addDomListener(this.node, "click", function (e) {
            if (!this.dragging)
                GEvent.trigger(map, "click", this, this.point, this.point);
        }.bind(this));
        map.getPane(G_MAP_MARKER_PANE ).appendChild(this.node);
        new Draggable(this.node, {
            onStart : function() {
                this.dragging = true;
            }.bind(this),
            onEnd: function() {
                // reset map point
                var latlng = map.fromDivPixelToLatLng(new GPoint(
                        this.node.offsetLeft + this.calculateLabelWidth(),
                        this.node.offsetTop));
                this.point = latlng;
                GEvent.trigger(this, "move", this, this.point);
                setTimeout(function() { this.dragging = false; }.bind(this), 1000); // use a timeout to avoid the 'click' event being fired
            }.bind(this)
        });
        return this.node;
    }

    DraggableOverlay.prototype.redraw = function(force) {
        this._updateNodePosition(this.node);
    }
    
    DraggableOverlay.prototype._updateNodePosition = function(node) {
        var width       = this.calculateLabelWidth();
        var p           = this.map.fromLatLngToDivPixel(this.point);
        var h           = 0; // parseInt(node.clientHeight);
        node.style.left = (p.x - width) + "px";
        node.style.top  = (p.y - h) + "px";        
    }
    
    DraggableOverlay.prototype.calculateLabelWidth = function() {
        if (this.anchor == 'left')
            return this.node.clientWidth;
        return 0;
    }
    
    DraggableOverlay.prototype.remove = function() {
        this.node.parentNode.removeChild(this.node);
    }
    
    function MapLabelOverlay(label, point) {
        this.label = label;
        this.setPoint(point);
        this.setAnchor(label.anchor);
    }
    
    MapLabelOverlay.prototype = new DraggableOverlay();
    
    MapLabelOverlay.prototype.createNode = function() {
        var node       = document.createElement("div");
        node.className = 'mapLabel';
        node.innerHTML = '&#8226;' + l.name;
        var zoomDiff   = l.zoom - this.map.getZoom();
        var fontSize   = 14 - (zoomDiff * 2);
        node.style.fontSize = fontSize + 'px';
    }
    
    window.DraggableOverlay = DraggableOverlay;
    window.MapLabelOverlay  = MapLabelOverlay;
    
    
}


/* -------------------------------------------------------------------------------------------- */

/**
 * Location List Control
 * 
 * We defer the definition of this class as it requires the google maps javascript to be loaded to instantiate the parent prototype.
 */
function defineLocationListControl() {

var idSuffix = 0;
    
function LocationListControl(hotelMap) {
    this.idSuffix = idSuffix++;
    this.hotelMap = hotelMap;
    this.list     = null;
    this.open     = false;
    this.subLists = {};
    this.selectedSubList = "showHotelSubList";
}

LocationListControl.prototype = new GControl();

/**
 * Determine whether or not the list has been created yet
 */
LocationListControl.prototype.isInitialized = function() {
    return this.list != null;
}

/**
 * Method called by the Google Maps API to intialize the control
 */
LocationListControl.prototype.initialize = function(map) {
    var container = document.createElement("div");
    container.innerHTML = tmpl("map_locationList_openButton", {idSuffix: this.idSuffix});

    container.onclick = function(e) {
        if (this.open) {
            this.closeList();
        } else {
            this.openList();
        }
    }.bind(this);

    map.getContainer().appendChild(container);
    this.createList();
    return container;
}

LocationListControl.prototype.forEachSubList = function(callback) {
    for (var k in this.subLists) {
        var l = this.subLists[k];
        callback(l);
    }
}

/**
 * Readjust the height of the list such that it matches that of the map provided.
 */
LocationListControl.prototype.setHeightBasedOnMap = function(map) {
    if (this.list == null) return;
    this.listHeight        = map.getContainer().offsetHeight - 1;
    this.listHeightNoNav   = this.listHeight - 16;
    this.list.style.height = this.listHeight + 'px';
    this.forEachSubList(function (l){
        l.setHeight(this.listHeightNoNav);
    }.bind(this));
}

LocationListControl.prototype.refresh = function() {
    if (this.list == null) return;
    this.forEachSubList(function (l) {
        l.refreshAllLocations();
        l.refreshVisibleLocations();
    }.bind(this));
}

LocationListControl.prototype.getDefaultPosition = function() {
    return new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(5, 5));
}

LocationListControl.prototype.getListHeight = function() {
    return this.listHeightNoNav;
}

LocationListControl.prototype.toggleSubList = function(listName, dontOpen) {
    Element.removeClassName(this.list, 'show' + this.selectedSubList + 'SubList');
    this.selectedSubList = listName;
    Element.addClassName(this.list, 'show' + this.selectedSubList + 'SubList');
    this.forEachSubList(function (l) {
        l.updateAllLocationsHeight();
    }.bind(this));
    if (!this.open && !dontOpen) {
        this.openList();
    }
}

LocationListControl.prototype.addSubList = function(
        toggleName,
        allMarkersFunc,
        visibleMarkersFunc) {
    var subList = new LocationSubList(this, this.hotelMap, allMarkersFunc, visibleMarkersFunc, toggleName);
    this.subLists[toggleName] = subList;
    return subList;
}

LocationListControl.prototype.createList = function() {
    this.hotelMap.map.getContainer().style.zIndex = 89;
    this.list           = document.createElement("div");
    this.list.id        = "map_allLocationsList_container" + this.idSuffix;
    this.list.className = "map_allLocationsList_container";
    //document.body.appendChild(this.list);
    Element.insert(this.hotelMap.container.parentNode, {'bottom' : this.list});
    
    this.addSubList('map_toggleHotels',
            function() {
                return this.hotelMap.getAllHotels();
            }.bind(this),
            function() {
                return this.hotelMap.getVisibleHotels();
            }.bind(this)
    );

    this.addSubList('map_toggleLandmarks',
            function() {
                return this.hotelMap.getAllLandmarks();
            }.bind(this),
            function() {
                return this.hotelMap.getVisibleLandmarks();
            }.bind(this)
    );
    
    this.toggleSubList('Hotel', true);
        
    this.setHeightBasedOnMap(this.hotelMap.map);
    
    var offset = Element.cumulativeOffset(this.hotelMap.map.getContainer());
    //this.list.style.left = offset.left + 'px';
    //this.list.style.top  = offset.top  + 'px';
    
    GEvent.addListener(this.hotelMap.map, "zoomend", function(oldLevel, newLevel) {
        this.forEachSubList(function (l) {
            l.refreshVisibleLocations();
        }.bind(this));
    }.bind(this));
    
    GEvent.addListener(this.hotelMap.map, "moveend", function() {
        this.forEachSubList(function (l) {
            l.refreshVisibleLocations();
        }.bind(this));
    }.bind(this));
}

LocationListControl.prototype.openList = function() {
    if (this.list == null) {
        this.createList();
    }
    this.list.style.visibility = 'visible';
    new Effect.Move('map_allLocationsList_container' + this.idSuffix, {
        x: -235,
        y: 0,
        mode: 'relative',
        queue: {
            position: 'front',
            scope: 'allLocations',
            limit: 1
        },
        afterFinish: function() {
            this.open = true;
            $('openLocListButton' + this.idSuffix).innerHTML = 'Close List';
        }.bind(this)
    });
}

LocationListControl.prototype.closeList = function() {
    new Effect.Move('map_allLocationsList_container' + this.idSuffix, {
        x: 235,
        y: 0,
        mode: 'relative',
        queue: {
            position: 'front',
            scope: 'allLocations',
            limit: 1
        },
        afterFinish: function(effect) {
            this.open = false;
            $('openLocListButton' + this.idSuffix).innerHTML = 'Hotel List';
            //effect.element.style.visibility = 'hidden';
        }.bind(this)
    });        
}

return LocationListControl;

}

/**
 * Represents a toggleable section on the locaiton list that will expose both 'all items' and 'now showing' for a particular location type.
 * (e.g. hotels, landmarks).
 */
LOCATION_SUB_LIST_ID_SUFFIX = 0;
function LocationSubList(parent, hotelMap, allMarkersFunc, visibleMarkersFunc, toggleName) {
    this.idSuffix           = LOCATION_SUB_LIST_ID_SUFFIX++;
    this.parent             = parent;
    this.hotelMap           = hotelMap
    this.allMarkersFunc     = allMarkersFunc;
    this.visibleMarkersFunc = visibleMarkersFunc;
    this.toggleName         = toggleName;

    this.list           = document.createElement("div");
    this.list.className = "map_allLocationsList_subList " + toggleName;
    this.list.innerHTML = tmpl("map_allLocationsList", {idSuffix : this.idSuffix});
    this.parent.list.appendChild(this.list);
    
    var viewAllTab = $("map_allLocationsNav_all" + this.idSuffix);
    var viewVisTab = $("map_allLocationsNav_vis" + this.idSuffix);
    
    $("map_toggleHotels" + this.idSuffix).onclick = function() {
        this.parent.toggleSubList('Hotel');
    }.bind(this);
    
    $("map_toggleLandmarks" + this.idSuffix).onclick = function() {
        this.parent.toggleSubList("Landmark");
    }.bind(this);

    $(this.toggleName + this.idSuffix).removeClassName("toggleInactive");
    $(this.toggleName + this.idSuffix).addClassName("toggleActive");
    
    viewAllTab.onclick = function(e) {
        viewAllTab.removeClassName("map_allLocationsNav_tab_hidden");
        viewVisTab.addClassName("map_allLocationsNav_tab_hidden");
        $("map_allLocationsList_all" + this.idSuffix).style.display = "block";
        $("map_allLocationsList_vis" + this.idSuffix).style.display = "none";
        this.updateAllLocationsHeight();
    }.bind(this);
    
    viewVisTab.onclick = function(e) {
        viewVisTab.removeClassName("map_allLocationsNav_tab_hidden");
        viewAllTab.addClassName("map_allLocationsNav_tab_hidden");
        $("map_allLocationsList_vis" + this.idSuffix).style.display = "block";
        $("map_allLocationsList_all" + this.idSuffix).style.display = "none";
        this.updateAllLocationsHeight();
    }.bind(this);
    
    this.allLocations = this.buildLocationList(
            this.sortMarkers(this.allMarkersFunc()),
            'map_allLocationsList_all',
            this.toggleName + '_items');
    
    this.visibleLocations = this.buildLocationList(
            this.sortMarkers(this.visibleMarkersFunc()),
            'map_allLocationsList_vis',
            this.toggleName + '_items');

    // show visible locations by default
    this.allLocations.style.display     = 'none';
    this.visibleLocations.style.display = 'block';    
}

LocationSubList.prototype.sortMarkers = function(markers) {
    var locations = this.hotelMap.locations;
    var sortedMarkers = markers.clone();
    
    sortedMarkers.sort(function (a, b) {
        var nameA = locations[a._dataIdx].name;
        var nameB = locations[b._dataIdx].name;
        if (nameA > nameB) {
            return 1;
        } else if (nameA == nameB) {
            return 0;
        }
        return -1;
    });
    
    return sortedMarkers;
}

LocationSubList.prototype.refreshVisibleLocations = function() {
    var currentStyle = document.getElementById("map_allLocationsList_vis" + this.idSuffix).style.display;
    this.visibleLocations.remove();
    this.visibleLocations = this.buildLocationList(this.sortMarkers(this.visibleMarkersFunc()), 'map_allLocationsList_vis', this.toggleName + '_items');
    document.getElementById("map_allLocationsList_vis" + this.idSuffix).style.display = currentStyle;
    this.updateAllLocationsHeight();
}

LocationSubList.prototype.refreshAllLocations = function() {
    var currentStyle = $('map_allLocationsList_all' + this.idSuffix).style.display;
    this.allLocations.remove();
    this.allLocations = this.buildLocationList(this.sortMarkers(this.allMarkersFunc()), 'map_allLocationsList_all', this.toggleName + '_items');
    $('map_allLocationsList_all' + this.idSuffix).style.display = currentStyle;        
}

LocationSubList.prototype.buildLocationList = function(markers, listId, itemsTemplate) {
    var parentContainer = document.getElementById("map_allLocationsList_data" + this.idSuffix);
    var container = new Element("div");
    container.id = listId + this.idSuffix;
    container.className = listId;
  
    container.innerHTML += tmpl(itemsTemplate, {
        'markers'   : markers,
        'locations' : this.hotelMap.locations,
        'listId'    : listId,
        'idSuffix'  : this.idSuffix
    });
    parentContainer.appendChild(container);
            
    var items = container.getElementsByClassName("map_allLocationsList_item");
    for (var itemIdx = 0; itemIdx < items.length; itemIdx++) {
        (function() {
            var item = items[itemIdx];
            var dataIdx = item.readAttribute("dataIdx");
            item.onmouseover = function() { this.itemMouseOver(item, dataIdx); }.bind(this);
            item.onmouseout  = function() { this.itemMouseOut(item, dataIdx); }.bind(this);
            item.onclick     = function() { this.itemClick(item, dataIdx); }.bind(this);           
        }).bind(this)();
    }
    
    return container;
}

LocationSubList.prototype.itemMouseOver = function(node, dataIdx) {
    node.style.backgroundColor = "#A1D1EC";
    var marker = this.hotelMap.clusters[this.hotelMap.allMarkers[dataIdx]._cIdx][0];
    if (this.hotelMap.map.getBounds().containsLatLng(marker.getLatLng())) {
        this.hotelMap.showToolTip(marker, {'tooltip' : this.hotelMap.locations[dataIdx].name});
    }
}

LocationSubList.prototype.itemMouseOut = function(node, dataIdx) {
    node.style.backgroundColor = "#FFFFFF";
}

LocationSubList.prototype.itemClick = function(node, dataIdx) {
    STOP_WATCH.go();
    var marker  = this.hotelMap.allMarkers[dataIdx];
    var locData = this.hotelMap.locations[dataIdx];
    this.hotelMap.zoomTarget = marker;
    var zoom = this.hotelMap.calculateOptimalZoom(marker, this.hotelMap.allMarkers, 15);
    STOP_WATCH.checkpoint("Calculated zoom level based on surrounding markers");
    var currentZoom = this.hotelMap.map.getZoom();
    this.hotelMap.map.setCenter(new GLatLng(locData.lat, locData.lng), zoom);
    STOP_WATCH.checkpoint("Re-centered and zoomed map");
    if (zoom == currentZoom) {
        // if we have not changed zoom level, avoid doing a full refresh
        this.hotelMap.zoomTarget = null;
        this.hotelMap.showMarkerInfo(marker);
        STOP_WATCH.checkpoint("Single zoom refresh");
    }
}

/**
 * This function is required to pad out the height of the data section if it is less than
 * the desired height of the list (i.e. the height of the map).  It should be called whenever the height of
 * either the map, or the data in the list changes.
 */
LocationSubList.prototype.updateAllLocationsHeight = function() {
    var trans = document.getElementById('map_allLocationsList_trans' + this.idSuffix);
    var data  = document.getElementById('map_allLocationsList_data' + this.idSuffix);
    data.style.height = 'auto';
   
    if (data.offsetHeight < this.height) {
        data.style.height = this.height + 'px';
    }
    trans.style.height = data.offsetHeight + 'px';
}

LocationSubList.prototype.setHeight = function(heightPx) {
    this.height = heightPx;
    $("map_allLocationsList_outer" + this.idSuffix).style.height = heightPx + 'px';
}